Home / 1,234,813.32-1,852,219.98-813,990.78

Finding the Fourth Proportional to 1,234,813.32, 1,852,219.98 and 813,990.78

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Solution

The fourth proportional to 1,234,813.32, 1,852,219.98 and 813,990.78 is: 1,220,986.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,234,813.32 : 1,852,219.98 = 813,990.78 : x
  2. Step 2: Convert to fraction form
    1,234,813.32/1,852,219.98 = 813,990.78/x
  3. Step 3: Cross multiply
    1,234,813.32x = 1,852,219.98 × 813,990.78
  4. Step 4: Simplify right side
    1,234,813.32x = 1,507,689,986,251.78
  5. Step 5: Solve for x
    x = 1,507,689,986,251.78/1,234,813.32
  6. Step 6: Final answer
    x = 1,220,986.17

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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.