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Finding the Fourth Proportional to 8,953,287.40, 13,429,931.10 and 5,126,912.20

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Solution

The fourth proportional to 8,953,287.40, 13,429,931.10 and 5,126,912.20 is: 7,690,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953,287.40 : 13,429,931.10 = 5,126,912.20 : x
  2. Step 2: Convert to fraction form
    8,953,287.40/13,429,931.10 = 5,126,912.20/x
  3. Step 3: Cross multiply
    8,953,287.40x = 13,429,931.10 × 5,126,912.20
  4. Step 4: Simplify right side
    8,953,287.40x = 68,854,077,601,749.42
  5. Step 5: Solve for x
    x = 68,854,077,601,749.42/8,953,287.40
  6. Step 6: Final answer
    x = 7,690,368.30

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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.