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Finding the Fourth Proportional to 657,276.29, 907,041.89 and 355,470.29

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Solution

The fourth proportional to 657,276.29, 907,041.89 and 355,470.29 is: 490,549.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,276.29 : 907,041.89 = 355,470.29 : x
  2. Step 2: Convert to fraction form
    657,276.29/907,041.89 = 355,470.29/x
  3. Step 3: Cross multiply
    657,276.29x = 907,041.89 × 355,470.29
  4. Step 4: Simplify right side
    657,276.29x = 322,426,441,903.10
  5. Step 5: Solve for x
    x = 322,426,441,903.10/657,276.29
  6. Step 6: Final answer
    x = 490,549.33

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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.