Home / 1,209,141.80-1,668,581.28-665,277.96

Finding the Fourth Proportional to 1,209,141.80, 1,668,581.28 and 665,277.96

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Solution

The fourth proportional to 1,209,141.80, 1,668,581.28 and 665,277.96 is: 918,064.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,141.80 : 1,668,581.28 = 665,277.96 : x
  2. Step 2: Convert to fraction form
    1,209,141.80/1,668,581.28 = 665,277.96/x
  3. Step 3: Cross multiply
    1,209,141.80x = 1,668,581.28 × 665,277.96
  4. Step 4: Simplify right side
    1,209,141.80x = 1,110,070,350,052.59
  5. Step 5: Solve for x
    x = 1,110,070,350,052.59/1,209,141.80
  6. Step 6: Final answer
    x = 918,064.66

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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.