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Finding the Fourth Proportional to 657,348.16, 907,140.50 and 355,542.16

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Solution

The fourth proportional to 657,348.16, 907,140.50 and 355,542.16 is: 490,648.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,348.16 : 907,140.50 = 355,542.16 : x
  2. Step 2: Convert to fraction form
    657,348.16/907,140.50 = 355,542.16/x
  3. Step 3: Cross multiply
    657,348.16x = 907,140.50 × 355,542.16
  4. Step 4: Simplify right side
    657,348.16x = 322,526,692,793.48
  5. Step 5: Solve for x
    x = 322,526,692,793.48/657,348.16
  6. Step 6: Final answer
    x = 490,648.20

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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.