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Finding the Fourth Proportional to 634,138.20, 875,165.85 and 347,714.10

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Solution

The fourth proportional to 634,138.20, 875,165.85 and 347,714.10 is: 479,875.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,138.20 : 875,165.85 = 347,714.10 : x
  2. Step 2: Convert to fraction form
    634,138.20/875,165.85 = 347,714.10/x
  3. Step 3: Cross multiply
    634,138.20x = 875,165.85 × 347,714.10
  4. Step 4: Simplify right side
    634,138.20x = 304,307,505,883.49
  5. Step 5: Solve for x
    x = 304,307,505,883.49/634,138.20
  6. Step 6: Final answer
    x = 479,875.69

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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.