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Finding the Fourth Proportional to 8,474,712, 12,717,666.72 and 3,987,337.92

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Solution

The fourth proportional to 8,474,712, 12,717,666.72 and 3,987,337.92 is: 5,983,641.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,474,712 : 12,717,666.72 = 3,987,337.92 : x
  2. Step 2: Convert to fraction form
    8,474,712/12,717,666.72 = 3,987,337.92/x
  3. Step 3: Cross multiply
    8,474,712x = 12,717,666.72 × 3,987,337.92
  4. Step 4: Simplify right side
    8,474,712x = 50,709,634,766,578.02
  5. Step 5: Solve for x
    x = 50,709,634,766,578.02/8,474,712
  6. Step 6: Final answer
    x = 5,983,641.07

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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.