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Finding the Fourth Proportional to 418,603.40, 627,905.10 and 366,115.40

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Solution

The fourth proportional to 418,603.40, 627,905.10 and 366,115.40 is: 549,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,603.40 : 627,905.10 = 366,115.40 : x
  2. Step 2: Convert to fraction form
    418,603.40/627,905.10 = 366,115.40/x
  3. Step 3: Cross multiply
    418,603.40x = 627,905.10 × 366,115.40
  4. Step 4: Simplify right side
    418,603.40x = 229,885,726,848.54
  5. Step 5: Solve for x
    x = 229,885,726,848.54/418,603.40
  6. Step 6: Final answer
    x = 549,173.10

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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.