Home / 1,776,490.80-2,664,711.56-428,642.16

Finding the Fourth Proportional to 1,776,490.80, 2,664,711.56 and 428,642.16

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Solution

The fourth proportional to 1,776,490.80, 2,664,711.56 and 428,642.16 is: 642,957.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,776,490.80 : 2,664,711.56 = 428,642.16 : x
  2. Step 2: Convert to fraction form
    1,776,490.80/2,664,711.56 = 428,642.16/x
  3. Step 3: Cross multiply
    1,776,490.80x = 2,664,711.56 × 428,642.16
  4. Step 4: Simplify right side
    1,776,490.80x = 1,142,207,716,712.16
  5. Step 5: Solve for x
    x = 1,142,207,716,712.16/1,776,490.80
  6. Step 6: Final answer
    x = 642,957.29

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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.