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Finding the Fourth Proportional to 657,412.60, 907,229.40 and 355,606.60

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Solution

The fourth proportional to 657,412.60, 907,229.40 and 355,606.60 is: 490,737.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,412.60 : 907,229.40 = 355,606.60 : x
  2. Step 2: Convert to fraction form
    657,412.60/907,229.40 = 355,606.60/x
  3. Step 3: Cross multiply
    657,412.60x = 907,229.40 × 355,606.60
  4. Step 4: Simplify right side
    657,412.60x = 322,616,762,354.04
  5. Step 5: Solve for x
    x = 322,616,762,354.04/657,412.60
  6. Step 6: Final answer
    x = 490,737.11

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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.