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Finding the Fourth Proportional to 657,753.76, 907,700.16 and 355,947.76

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Solution

The fourth proportional to 657,753.76, 907,700.16 and 355,947.76 is: 491,207.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,753.76 : 907,700.16 = 355,947.76 : x
  2. Step 2: Convert to fraction form
    657,753.76/907,700.16 = 355,947.76/x
  3. Step 3: Cross multiply
    657,753.76x = 907,700.16 × 355,947.76
  4. Step 4: Simplify right side
    657,753.76x = 323,093,838,703.64
  5. Step 5: Solve for x
    x = 323,093,838,703.64/657,753.76
  6. Step 6: Final answer
    x = 491,207.89

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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.