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Finding the Fourth Proportional to 657,348.96, 907,139.76 and 355,542.24

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Solution

The fourth proportional to 657,348.96, 907,139.76 and 355,542.24 is: 490,647.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,348.96 : 907,139.76 = 355,542.24 : x
  2. Step 2: Convert to fraction form
    657,348.96/907,139.76 = 355,542.24/x
  3. Step 3: Cross multiply
    657,348.96x = 907,139.76 × 355,542.24
  4. Step 4: Simplify right side
    657,348.96x = 322,526,502,263.46
  5. Step 5: Solve for x
    x = 322,526,502,263.46/657,348.96
  6. Step 6: Final answer
    x = 490,647.32

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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.