Home / 1,209,034.17-1,668,467.10-665,158.28

Finding the Fourth Proportional to 1,209,034.17, 1,668,467.10 and 665,158.28

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Solution

The fourth proportional to 1,209,034.17, 1,668,467.10 and 665,158.28 is: 917,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,034.17 : 1,668,467.10 = 665,158.28 : x
  2. Step 2: Convert to fraction form
    1,209,034.17/1,668,467.10 = 665,158.28/x
  3. Step 3: Cross multiply
    1,209,034.17x = 1,668,467.10 × 665,158.28
  4. Step 4: Simplify right side
    1,209,034.17x = 1,109,794,708,138.97
  5. Step 5: Solve for x
    x = 1,109,794,708,138.97/1,209,034.17
  6. Step 6: Final answer
    x = 917,918.40

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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.