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Finding the Fourth Proportional to 12,952,892.70, 19,429,339.05 and 3,976,278.30

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Solution

The fourth proportional to 12,952,892.70, 19,429,339.05 and 3,976,278.30 is: 5,964,417.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,952,892.70 : 19,429,339.05 = 3,976,278.30 : x
  2. Step 2: Convert to fraction form
    12,952,892.70/19,429,339.05 = 3,976,278.30/x
  3. Step 3: Cross multiply
    12,952,892.70x = 19,429,339.05 × 3,976,278.30
  4. Step 4: Simplify right side
    12,952,892.70x = 77,256,459,247,857.61
  5. Step 5: Solve for x
    x = 77,256,459,247,857.61/12,952,892.70
  6. Step 6: Final answer
    x = 5,964,417.45

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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.