Home / 8,271,320.40-12,406,985.10-2,591,989.20

Finding the Fourth Proportional to 8,271,320.40, 12,406,985.10 and 2,591,989.20

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Solution

The fourth proportional to 8,271,320.40, 12,406,985.10 and 2,591,989.20 is: 3,887,985.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,271,320.40 : 12,406,985.10 = 2,591,989.20 : x
  2. Step 2: Convert to fraction form
    8,271,320.40/12,406,985.10 = 2,591,989.20/x
  3. Step 3: Cross multiply
    8,271,320.40x = 12,406,985.10 × 2,591,989.20
  4. Step 4: Simplify right side
    8,271,320.40x = 32,158,771,383,760.92
  5. Step 5: Solve for x
    x = 32,158,771,383,760.92/8,271,320.40
  6. Step 6: Final answer
    x = 3,887,985.21

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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.