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Finding the Fourth Proportional to 8,603,705.52, 12,905,500.87 and 3,486,059.91

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Solution

The fourth proportional to 8,603,705.52, 12,905,500.87 and 3,486,059.91 is: 5,229,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603,705.52 : 12,905,500.87 = 3,486,059.91 : x
  2. Step 2: Convert to fraction form
    8,603,705.52/12,905,500.87 = 3,486,059.91/x
  3. Step 3: Cross multiply
    8,603,705.52x = 12,905,500.87 × 3,486,059.91
  4. Step 4: Simplify right side
    8,603,705.52x = 44,989,349,201,377.12
  5. Step 5: Solve for x
    x = 44,989,349,201,377.12/8,603,705.52
  6. Step 6: Final answer
    x = 5,229,066.60

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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.