Home / 1,209,283.92-1,668,823.65-665,431.41

Finding the Fourth Proportional to 1,209,283.92, 1,668,823.65 and 665,431.41

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Solution

The fourth proportional to 1,209,283.92, 1,668,823.65 and 665,431.41 is: 918,301.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,283.92 : 1,668,823.65 = 665,431.41 : x
  2. Step 2: Convert to fraction form
    1,209,283.92/1,668,823.65 = 665,431.41/x
  3. Step 3: Cross multiply
    1,209,283.92x = 1,668,823.65 × 665,431.41
  4. Step 4: Simplify right side
    1,209,283.92x = 1,110,487,662,789.57
  5. Step 5: Solve for x
    x = 1,110,487,662,789.57/1,209,283.92
  6. Step 6: Final answer
    x = 918,301.86

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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.