Home / 774,737.06-1,069,264.23-645,470.78

Finding the Fourth Proportional to 774,737.06, 1,069,264.23 and 645,470.78

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Solution

The fourth proportional to 774,737.06, 1,069,264.23 and 645,470.78 is: 890,855.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,737.06 : 1,069,264.23 = 645,470.78 : x
  2. Step 2: Convert to fraction form
    774,737.06/1,069,264.23 = 645,470.78/x
  3. Step 3: Cross multiply
    774,737.06x = 1,069,264.23 × 645,470.78
  4. Step 4: Simplify right side
    774,737.06x = 690,178,816,564.20
  5. Step 5: Solve for x
    x = 690,178,816,564.20/774,737.06
  6. Step 6: Final answer
    x = 890,855.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.