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Finding the Fourth Proportional to 677,437.52, 934,940.76 and 391,034.48

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Solution

The fourth proportional to 677,437.52, 934,940.76 and 391,034.48 is: 539,672.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,437.52 : 934,940.76 = 391,034.48 : x
  2. Step 2: Convert to fraction form
    677,437.52/934,940.76 = 391,034.48/x
  3. Step 3: Cross multiply
    677,437.52x = 934,940.76 × 391,034.48
  4. Step 4: Simplify right side
    677,437.52x = 365,594,073,917.41
  5. Step 5: Solve for x
    x = 365,594,073,917.41/677,437.52
  6. Step 6: Final answer
    x = 539,672.02

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1.5x scale

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.