Home / 438,644.20-657,966.30-376,436.20

Finding the Fourth Proportional to 438,644.20, 657,966.30 and 376,436.20

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Solution

The fourth proportional to 438,644.20, 657,966.30 and 376,436.20 is: 564,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,644.20 : 657,966.30 = 376,436.20 : x
  2. Step 2: Convert to fraction form
    438,644.20/657,966.30 = 376,436.20/x
  3. Step 3: Cross multiply
    438,644.20x = 657,966.30 × 376,436.20
  4. Step 4: Simplify right side
    438,644.20x = 247,682,333,700.06
  5. Step 5: Solve for x
    x = 247,682,333,700.06/438,644.20
  6. Step 6: Final answer
    x = 564,654.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.