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Finding the Fourth Proportional to 634,446.12, 875,560.20 and 347,978.28

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Solution

The fourth proportional to 634,446.12, 875,560.20 and 347,978.28 is: 480,223.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,446.12 : 875,560.20 = 347,978.28 : x
  2. Step 2: Convert to fraction form
    634,446.12/875,560.20 = 347,978.28/x
  3. Step 3: Cross multiply
    634,446.12x = 875,560.20 × 347,978.28
  4. Step 4: Simplify right side
    634,446.12x = 304,675,932,432.46
  5. Step 5: Solve for x
    x = 304,675,932,432.46/634,446.12
  6. Step 6: Final answer
    x = 480,223.49

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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.