Home / 722,236,510.92-996,991,488.63-487,604,981.37

Finding the Fourth Proportional to 722,236,510.92, 996,991,488.63 and 487,604,981.37

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Solution

The fourth proportional to 722,236,510.92, 996,991,488.63 and 487,604,981.37 is: 673,100,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,236,510.92 : 996,991,488.63 = 487,604,981.37 : x
  2. Step 2: Convert to fraction form
    722,236,510.92/996,991,488.63 = 487,604,981.37/x
  3. Step 3: Cross multiply
    722,236,510.92x = 996,991,488.63 × 487,604,981.37
  4. Step 4: Simplify right side
    722,236,510.92x = 486,138,016,239,479,744
  5. Step 5: Solve for x
    x = 486,138,016,239,479,744/722,236,510.92
  6. Step 6: Final answer
    x = 673,100,859.47

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Half scale
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Double scale
Find fourth proportional to 722,236,511.92, 996,991,490.01 and 487,604,982.37
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.