Home / 1,209,031.29-1,668,463.25-665,155.44

Finding the Fourth Proportional to 1,209,031.29, 1,668,463.25 and 665,155.44

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Solution

The fourth proportional to 1,209,031.29, 1,668,463.25 and 665,155.44 is: 917,914.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,031.29 : 1,668,463.25 = 665,155.44 : x
  2. Step 2: Convert to fraction form
    1,209,031.29/1,668,463.25 = 665,155.44/x
  3. Step 3: Cross multiply
    1,209,031.29x = 1,668,463.25 × 665,155.44
  4. Step 4: Simplify right side
    1,209,031.29x = 1,109,787,403,851.80
  5. Step 5: Solve for x
    x = 1,109,787,403,851.80/1,209,031.29
  6. Step 6: Final answer
    x = 917,914.54

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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.