Home / 8,422,658.40-12,633,987.60-6,432,002.40

Finding the Fourth Proportional to 8,422,658.40, 12,633,987.60 and 6,432,002.40

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Solution

The fourth proportional to 8,422,658.40, 12,633,987.60 and 6,432,002.40 is: 9,648,003.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422,658.40 : 12,633,987.60 = 6,432,002.40 : x
  2. Step 2: Convert to fraction form
    8,422,658.40/12,633,987.60 = 6,432,002.40/x
  3. Step 3: Cross multiply
    8,422,658.40x = 12,633,987.60 × 6,432,002.40
  4. Step 4: Simplify right side
    8,422,658.40x = 81,261,838,564,770.25
  5. Step 5: Solve for x
    x = 81,261,838,564,770.25/8,422,658.40
  6. Step 6: Final answer
    x = 9,648,003.60

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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.