Home / 1,209,001.13-1,668,421.52-665,125.22

Finding the Fourth Proportional to 1,209,001.13, 1,668,421.52 and 665,125.22

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Solution

The fourth proportional to 1,209,001.13, 1,668,421.52 and 665,125.22 is: 917,872.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,001.13 : 1,668,421.52 = 665,125.22 : x
  2. Step 2: Convert to fraction form
    1,209,001.13/1,668,421.52 = 665,125.22/x
  3. Step 3: Cross multiply
    1,209,001.13x = 1,668,421.52 × 665,125.22
  4. Step 4: Simplify right side
    1,209,001.13x = 1,109,709,223,863.44
  5. Step 5: Solve for x
    x = 1,109,709,223,863.44/1,209,001.13
  6. Step 6: Final answer
    x = 917,872.78

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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.