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Finding the Fourth Proportional to 657,257.60, 985,886.40 and 432,871.40

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Solution

The fourth proportional to 657,257.60, 985,886.40 and 432,871.40 is: 649,307.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,257.60 : 985,886.40 = 432,871.40 : x
  2. Step 2: Convert to fraction form
    657,257.60/985,886.40 = 432,871.40/x
  3. Step 3: Cross multiply
    657,257.60x = 985,886.40 × 432,871.40
  4. Step 4: Simplify right side
    657,257.60x = 426,762,026,208.96
  5. Step 5: Solve for x
    x = 426,762,026,208.96/657,257.60
  6. Step 6: Final answer
    x = 649,307.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.