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Finding the Fourth Proportional to 891,648,019.20, 1,337,472,028.80 and 542,969,579.10

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Solution

The fourth proportional to 891,648,019.20, 1,337,472,028.80 and 542,969,579.10 is: 814,454,368.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,648,019.20 : 1,337,472,028.80 = 542,969,579.10 : x
  2. Step 2: Convert to fraction form
    891,648,019.20/1,337,472,028.80 = 542,969,579.10/x
  3. Step 3: Cross multiply
    891,648,019.20x = 1,337,472,028.80 × 542,969,579.10
  4. Step 4: Simplify right side
    891,648,019.20x = 726,206,624,535,559,040
  5. Step 5: Solve for x
    x = 726,206,624,535,559,040/891,648,019.20
  6. Step 6: Final answer
    x = 814,454,368.65

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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.