Home / 1,005,729.72-1,387,907.03-553,020.72

Finding the Fourth Proportional to 1,005,729.72, 1,387,907.03 and 553,020.72

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Solution

The fourth proportional to 1,005,729.72, 1,387,907.03 and 553,020.72 is: 763,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,729.72 : 1,387,907.03 = 553,020.72 : x
  2. Step 2: Convert to fraction form
    1,005,729.72/1,387,907.03 = 553,020.72/x
  3. Step 3: Cross multiply
    1,005,729.72x = 1,387,907.03 × 553,020.72
  4. Step 4: Simplify right side
    1,005,729.72x = 767,541,345,023.66
  5. Step 5: Solve for x
    x = 767,541,345,023.66/1,005,729.72
  6. Step 6: Final answer
    x = 763,168.60

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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.