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Finding the Fourth Proportional to 709,903.82, 979,659.82 and 387,612.92

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Solution

The fourth proportional to 709,903.82, 979,659.82 and 387,612.92 is: 534,901.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,903.82 : 979,659.82 = 387,612.92 : x
  2. Step 2: Convert to fraction form
    709,903.82/979,659.82 = 387,612.92/x
  3. Step 3: Cross multiply
    709,903.82x = 979,659.82 × 387,612.92
  4. Step 4: Simplify right side
    709,903.82x = 379,728,803,436.87
  5. Step 5: Solve for x
    x = 379,728,803,436.87/709,903.82
  6. Step 6: Final answer
    x = 534,901.76

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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.