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Finding the Fourth Proportional to 638,034.40, 880,549.52 and 476,609.20

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Solution

The fourth proportional to 638,034.40, 880,549.52 and 476,609.20 is: 657,767.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,034.40 : 880,549.52 = 476,609.20 : x
  2. Step 2: Convert to fraction form
    638,034.40/880,549.52 = 476,609.20/x
  3. Step 3: Cross multiply
    638,034.40x = 880,549.52 × 476,609.20
  4. Step 4: Simplify right side
    638,034.40x = 419,677,997,884.84
  5. Step 5: Solve for x
    x = 419,677,997,884.84/638,034.40
  6. Step 6: Final answer
    x = 657,767.04

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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.