Home / 687,743.87-947,124.70-496,454.27

Finding the Fourth Proportional to 687,743.87, 947,124.70 and 496,454.27

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Solution

The fourth proportional to 687,743.87, 947,124.70 and 496,454.27 is: 683,690.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,743.87 : 947,124.70 = 496,454.27 : x
  2. Step 2: Convert to fraction form
    687,743.87/947,124.70 = 496,454.27/x
  3. Step 3: Cross multiply
    687,743.87x = 947,124.70 × 496,454.27
  4. Step 4: Simplify right side
    687,743.87x = 470,204,095,560.71
  5. Step 5: Solve for x
    x = 470,204,095,560.71/687,743.87
  6. Step 6: Final answer
    x = 683,690.72

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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.