Home / 676,823.40-934,115.76-390,287.52

Finding the Fourth Proportional to 676,823.40, 934,115.76 and 390,287.52

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Solution

The fourth proportional to 676,823.40, 934,115.76 and 390,287.52 is: 538,654.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,823.40 : 934,115.76 = 390,287.52 : x
  2. Step 2: Convert to fraction form
    676,823.40/934,115.76 = 390,287.52/x
  3. Step 3: Cross multiply
    676,823.40x = 934,115.76 × 390,287.52
  4. Step 4: Simplify right side
    676,823.40x = 364,573,723,363.32
  5. Step 5: Solve for x
    x = 364,573,723,363.32/676,823.40
  6. Step 6: Final answer
    x = 538,654.14

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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.