Home / 12,641,179.60-17,438,401.05-7,678,300.28

Finding the Fourth Proportional to 12,641,179.60, 17,438,401.05 and 7,678,300.28

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Solution

The fourth proportional to 12,641,179.60, 17,438,401.05 and 7,678,300.28 is: 10,592,150.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641,179.60 : 17,438,401.05 = 7,678,300.28 : x
  2. Step 2: Convert to fraction form
    12,641,179.60/17,438,401.05 = 7,678,300.28/x
  3. Step 3: Cross multiply
    12,641,179.60x = 17,438,401.05 × 7,678,300.28
  4. Step 4: Simplify right side
    12,641,179.60x = 133,897,279,664,967.30
  5. Step 5: Solve for x
    x = 133,897,279,664,967.30/12,641,179.60
  6. Step 6: Final answer
    x = 10,592,150.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.