Home / 1,209,036.38-1,668,470.14-665,160.49

Finding the Fourth Proportional to 1,209,036.38, 1,668,470.14 and 665,160.49

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Solution

The fourth proportional to 1,209,036.38, 1,668,470.14 and 665,160.49 is: 917,921.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,036.38 : 1,668,470.14 = 665,160.49 : x
  2. Step 2: Convert to fraction form
    1,209,036.38/1,668,470.14 = 665,160.49/x
  3. Step 3: Cross multiply
    1,209,036.38x = 1,668,470.14 × 665,160.49
  4. Step 4: Simplify right side
    1,209,036.38x = 1,109,800,418,789.81
  5. Step 5: Solve for x
    x = 1,109,800,418,789.81/1,209,036.38
  6. Step 6: Final answer
    x = 917,921.45

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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.