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Finding the Fourth Proportional to 26,959,819.40, 40,439,729.10 and 7,791,201.80

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Solution

The fourth proportional to 26,959,819.40, 40,439,729.10 and 7,791,201.80 is: 11,686,802.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,959,819.40 : 40,439,729.10 = 7,791,201.80 : x
  2. Step 2: Convert to fraction form
    26,959,819.40/40,439,729.10 = 7,791,201.80/x
  3. Step 3: Cross multiply
    26,959,819.40x = 40,439,729.10 × 7,791,201.80
  4. Step 4: Simplify right side
    26,959,819.40x = 315,074,090,155,432.38
  5. Step 5: Solve for x
    x = 315,074,090,155,432.38/26,959,819.40
  6. Step 6: Final answer
    x = 11,686,802.70

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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.