Home / 1,209,037.38-1,668,471.52-665,161.49

Finding the Fourth Proportional to 1,209,037.38, 1,668,471.52 and 665,161.49

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Solution

The fourth proportional to 1,209,037.38, 1,668,471.52 and 665,161.49 is: 917,922.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,037.38 : 1,668,471.52 = 665,161.49 : x
  2. Step 2: Convert to fraction form
    1,209,037.38/1,668,471.52 = 665,161.49/x
  3. Step 3: Cross multiply
    1,209,037.38x = 1,668,471.52 × 665,161.49
  4. Step 4: Simplify right side
    1,209,037.38x = 1,109,803,002,265.76
  5. Step 5: Solve for x
    x = 1,109,803,002,265.76/1,209,037.38
  6. Step 6: Final answer
    x = 917,922.82

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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.