Home / 8,120,421.02-12,179,773.20-4,280,705.12

Finding the Fourth Proportional to 8,120,421.02, 12,179,773.20 and 4,280,705.12

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Solution

The fourth proportional to 8,120,421.02, 12,179,773.20 and 4,280,705.12 is: 6,420,605.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120,421.02 : 12,179,773.20 = 4,280,705.12 : x
  2. Step 2: Convert to fraction form
    8,120,421.02/12,179,773.20 = 4,280,705.12/x
  3. Step 3: Cross multiply
    8,120,421.02x = 12,179,773.20 × 4,280,705.12
  4. Step 4: Simplify right side
    8,120,421.02x = 52,138,017,497,678.78
  5. Step 5: Solve for x
    x = 52,138,017,497,678.78/8,120,421.02
  6. Step 6: Final answer
    x = 6,420,605.21

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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.