Home / 657,445.95-985,788.63-257,618.61

Finding the Fourth Proportional to 657,445.95, 985,788.63 and 257,618.61

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Solution

The fourth proportional to 657,445.95, 985,788.63 and 257,618.61 is: 386,278.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,445.95 : 985,788.63 = 257,618.61 : x
  2. Step 2: Convert to fraction form
    657,445.95/985,788.63 = 257,618.61/x
  3. Step 3: Cross multiply
    657,445.95x = 985,788.63 × 257,618.61
  4. Step 4: Simplify right side
    657,445.95x = 253,957,496,614.40
  5. Step 5: Solve for x
    x = 253,957,496,614.40/657,445.95
  6. Step 6: Final answer
    x = 386,278.90

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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.