Home / 728,000,648.40-1,092,000,972.60-291,368,722.80

Finding the Fourth Proportional to 728,000,648.40, 1,092,000,972.60 and 291,368,722.80

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Solution

The fourth proportional to 728,000,648.40, 1,092,000,972.60 and 291,368,722.80 is: 437,053,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,000,648.40 : 1,092,000,972.60 = 291,368,722.80 : x
  2. Step 2: Convert to fraction form
    728,000,648.40/1,092,000,972.60 = 291,368,722.80/x
  3. Step 3: Cross multiply
    728,000,648.40x = 1,092,000,972.60 × 291,368,722.80
  4. Step 4: Simplify right side
    728,000,648.40x = 318,174,928,682,819,776
  5. Step 5: Solve for x
    x = 318,174,928,682,819,776/728,000,648.40
  6. Step 6: Final answer
    x = 437,053,084.20

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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.