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Finding the Fourth Proportional to 657,792.87, 907,752.38 and 355,986.87

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Solution

The fourth proportional to 657,792.87, 907,752.38 and 355,986.87 is: 491,260.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,792.87 : 907,752.38 = 355,986.87 : x
  2. Step 2: Convert to fraction form
    657,792.87/907,752.38 = 355,986.87/x
  3. Step 3: Cross multiply
    657,792.87x = 907,752.38 × 355,986.87
  4. Step 4: Simplify right side
    657,792.87x = 323,147,926,711.32
  5. Step 5: Solve for x
    x = 323,147,926,711.32/657,792.87
  6. Step 6: Final answer
    x = 491,260.91

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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.