Home / 657,927.72-907,941.61-356,121.72

Finding the Fourth Proportional to 657,927.72, 907,941.61 and 356,121.72

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Solution

The fourth proportional to 657,927.72, 907,941.61 and 356,121.72 is: 491,448.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,927.72 : 907,941.61 = 356,121.72 : x
  2. Step 2: Convert to fraction form
    657,927.72/907,941.61 = 356,121.72/x
  3. Step 3: Cross multiply
    657,927.72x = 907,941.61 × 356,121.72
  4. Step 4: Simplify right side
    657,927.72x = 323,337,727,812.77
  5. Step 5: Solve for x
    x = 323,337,727,812.77/657,927.72
  6. Step 6: Final answer
    x = 491,448.71

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Double scale
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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.