Home / 1,098,812.20-1,648,218.30-921,665.20

Finding the Fourth Proportional to 1,098,812.20, 1,648,218.30 and 921,665.20

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Solution

The fourth proportional to 1,098,812.20, 1,648,218.30 and 921,665.20 is: 1,382,497.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098,812.20 : 1,648,218.30 = 921,665.20 : x
  2. Step 2: Convert to fraction form
    1,098,812.20/1,648,218.30 = 921,665.20/x
  3. Step 3: Cross multiply
    1,098,812.20x = 1,648,218.30 × 921,665.20
  4. Step 4: Simplify right side
    1,098,812.20x = 1,519,105,449,113.16
  5. Step 5: Solve for x
    x = 1,519,105,449,113.16/1,098,812.20
  6. Step 6: Final answer
    x = 1,382,497.80

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Double scale
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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.