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Finding the Fourth Proportional to 657,306.80, 985,992.60 and 342,378.80

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Solution

The fourth proportional to 657,306.80, 985,992.60 and 342,378.80 is: 513,585.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,306.80 : 985,992.60 = 342,378.80 : x
  2. Step 2: Convert to fraction form
    657,306.80/985,992.60 = 342,378.80/x
  3. Step 3: Cross multiply
    657,306.80x = 985,992.60 × 342,378.80
  4. Step 4: Simplify right side
    657,306.80x = 337,582,963,196.88
  5. Step 5: Solve for x
    x = 337,582,963,196.88/657,306.80
  6. Step 6: Final answer
    x = 513,585.08

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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.