Home / 1,005,729.91-1,387,907.29-553,020.91

Finding the Fourth Proportional to 1,005,729.91, 1,387,907.29 and 553,020.91

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Solution

The fourth proportional to 1,005,729.91, 1,387,907.29 and 553,020.91 is: 763,168.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,729.91 : 1,387,907.29 = 553,020.91 : x
  2. Step 2: Convert to fraction form
    1,005,729.91/1,387,907.29 = 553,020.91/x
  3. Step 3: Cross multiply
    1,005,729.91x = 1,387,907.29 × 553,020.91
  4. Step 4: Simplify right side
    1,005,729.91x = 767,541,752,511.43
  5. Step 5: Solve for x
    x = 767,541,752,511.43/1,005,729.91
  6. Step 6: Final answer
    x = 763,168.86

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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.