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Finding the Fourth Proportional to 634,140.38, 875,113.50 and 347,654.32

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Solution

The fourth proportional to 634,140.38, 875,113.50 and 347,654.32 is: 479,762.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,140.38 : 875,113.50 = 347,654.32 : x
  2. Step 2: Convert to fraction form
    634,140.38/875,113.50 = 347,654.32/x
  3. Step 3: Cross multiply
    634,140.38x = 875,113.50 × 347,654.32
  4. Step 4: Simplify right side
    634,140.38x = 304,236,988,765.32
  5. Step 5: Solve for x
    x = 304,236,988,765.32/634,140.38
  6. Step 6: Final answer
    x = 479,762.84

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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.