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Finding the Fourth Proportional to 657,360.48, 907,156.80 and 355,553.76

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Solution

The fourth proportional to 657,360.48, 907,156.80 and 355,553.76 is: 490,663.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,360.48 : 907,156.80 = 355,553.76 : x
  2. Step 2: Convert to fraction form
    657,360.48/907,156.80 = 355,553.76/x
  3. Step 3: Cross multiply
    657,360.48x = 907,156.80 × 355,553.76
  4. Step 4: Simplify right side
    657,360.48x = 322,543,011,149.57
  5. Step 5: Solve for x
    x = 322,543,011,149.57/657,360.48
  6. Step 6: Final answer
    x = 490,663.83

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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.