Home / 657,142.50-906,955.08-402,641.31

Finding the Fourth Proportional to 657,142.50, 906,955.08 and 402,641.31

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Solution

The fourth proportional to 657,142.50, 906,955.08 and 402,641.31 is: 555,705.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,142.50 : 906,955.08 = 402,641.31 : x
  2. Step 2: Convert to fraction form
    657,142.50/906,955.08 = 402,641.31/x
  3. Step 3: Cross multiply
    657,142.50x = 906,955.08 × 402,641.31
  4. Step 4: Simplify right side
    657,142.50x = 365,177,581,522.36
  5. Step 5: Solve for x
    x = 365,177,581,522.36/657,142.50
  6. Step 6: Final answer
    x = 555,705.32

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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.