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Finding the Fourth Proportional to 676,850.48, 934,287.76 and 390,484.72

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Solution

The fourth proportional to 676,850.48, 934,287.76 and 390,484.72 is: 539,003.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,850.48 : 934,287.76 = 390,484.72 : x
  2. Step 2: Convert to fraction form
    676,850.48/934,287.76 = 390,484.72/x
  3. Step 3: Cross multiply
    676,850.48x = 934,287.76 × 390,484.72
  4. Step 4: Simplify right side
    676,850.48x = 364,825,094,363.03
  5. Step 5: Solve for x
    x = 364,825,094,363.03/676,850.48
  6. Step 6: Final answer
    x = 539,003.97

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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.