Home / 1,209,035.54-1,668,469.12-665,159.70

Finding the Fourth Proportional to 1,209,035.54, 1,668,469.12 and 665,159.70

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Solution

The fourth proportional to 1,209,035.54, 1,668,469.12 and 665,159.70 is: 917,920.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,035.54 : 1,668,469.12 = 665,159.70 : x
  2. Step 2: Convert to fraction form
    1,209,035.54/1,668,469.12 = 665,159.70/x
  3. Step 3: Cross multiply
    1,209,035.54x = 1,668,469.12 × 665,159.70
  4. Step 4: Simplify right side
    1,209,035.54x = 1,109,798,419,318.46
  5. Step 5: Solve for x
    x = 1,109,798,419,318.46/1,209,035.54
  6. Step 6: Final answer
    x = 917,920.43

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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.