Home / 8,390,118.24-12,563,247.60-7,878,720.42

Finding the Fourth Proportional to 8,390,118.24, 12,563,247.60 and 7,878,720.42

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Solution

The fourth proportional to 8,390,118.24, 12,563,247.60 and 7,878,720.42 is: 11,797,487.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390,118.24 : 12,563,247.60 = 7,878,720.42 : x
  2. Step 2: Convert to fraction form
    8,390,118.24/12,563,247.60 = 7,878,720.42/x
  3. Step 3: Cross multiply
    8,390,118.24x = 12,563,247.60 × 7,878,720.42
  4. Step 4: Simplify right side
    8,390,118.24x = 98,982,315,407,635.98
  5. Step 5: Solve for x
    x = 98,982,315,407,635.98/8,390,118.24
  6. Step 6: Final answer
    x = 11,797,487.54

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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.