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Finding the Fourth Proportional to 8,971,687.20, 13,457,530.80 and 4,667,015.10

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Solution

The fourth proportional to 8,971,687.20, 13,457,530.80 and 4,667,015.10 is: 7,000,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971,687.20 : 13,457,530.80 = 4,667,015.10 : x
  2. Step 2: Convert to fraction form
    8,971,687.20/13,457,530.80 = 4,667,015.10/x
  3. Step 3: Cross multiply
    8,971,687.20x = 13,457,530.80 × 4,667,015.10
  4. Step 4: Simplify right side
    8,971,687.20x = 62,806,499,452,315.08
  5. Step 5: Solve for x
    x = 62,806,499,452,315.08/8,971,687.20
  6. Step 6: Final answer
    x = 7,000,522.65

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Double scale
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Similar ratio
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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.