Home / 7,872,142.80-11,808,214.20-6,472,462.80

Finding the Fourth Proportional to 7,872,142.80, 11,808,214.20 and 6,472,462.80

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Solution

The fourth proportional to 7,872,142.80, 11,808,214.20 and 6,472,462.80 is: 9,708,694.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872,142.80 : 11,808,214.20 = 6,472,462.80 : x
  2. Step 2: Convert to fraction form
    7,872,142.80/11,808,214.20 = 6,472,462.80/x
  3. Step 3: Cross multiply
    7,872,142.80x = 11,808,214.20 × 6,472,462.80
  4. Step 4: Simplify right side
    7,872,142.80x = 76,428,227,143,931.75
  5. Step 5: Solve for x
    x = 76,428,227,143,931.75/7,872,142.80
  6. Step 6: Final answer
    x = 9,708,694.20

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Double scale
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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.