Home / 1,209,291.92-1,668,834.70-665,439.42

Finding the Fourth Proportional to 1,209,291.92, 1,668,834.70 and 665,439.42

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Solution

The fourth proportional to 1,209,291.92, 1,668,834.70 and 665,439.42 is: 918,312.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,291.92 : 1,668,834.70 = 665,439.42 : x
  2. Step 2: Convert to fraction form
    1,209,291.92/1,668,834.70 = 665,439.42/x
  3. Step 3: Cross multiply
    1,209,291.92x = 1,668,834.70 × 665,439.42
  4. Step 4: Simplify right side
    1,209,291.92x = 1,110,508,394,843.87
  5. Step 5: Solve for x
    x = 1,110,508,394,843.87/1,209,291.92
  6. Step 6: Final answer
    x = 918,312.92

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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.