Home / 1,209,002.13-1,668,422.90-665,126.22

Finding the Fourth Proportional to 1,209,002.13, 1,668,422.90 and 665,126.22

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Solution

The fourth proportional to 1,209,002.13, 1,668,422.90 and 665,126.22 is: 917,874.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,002.13 : 1,668,422.90 = 665,126.22 : x
  2. Step 2: Convert to fraction form
    1,209,002.13/1,668,422.90 = 665,126.22/x
  3. Step 3: Cross multiply
    1,209,002.13x = 1,668,422.90 × 665,126.22
  4. Step 4: Simplify right side
    1,209,002.13x = 1,109,711,816,838.44
  5. Step 5: Solve for x
    x = 1,109,711,816,838.44/1,209,002.13
  6. Step 6: Final answer
    x = 917,874.16

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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.