Home / 789,921.18-1,185,545.34-340,981.20

Finding the Fourth Proportional to 789,921.18, 1,185,545.34 and 340,981.20

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Solution

The fourth proportional to 789,921.18, 1,185,545.34 and 340,981.20 is: 511,758.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,921.18 : 1,185,545.34 = 340,981.20 : x
  2. Step 2: Convert to fraction form
    789,921.18/1,185,545.34 = 340,981.20/x
  3. Step 3: Cross multiply
    789,921.18x = 1,185,545.34 × 340,981.20
  4. Step 4: Simplify right side
    789,921.18x = 404,248,672,687.61
  5. Step 5: Solve for x
    x = 404,248,672,687.61/789,921.18
  6. Step 6: Final answer
    x = 511,758.24

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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.