Home / 1,209,429.97-1,669,013.60-665,565.75

Finding the Fourth Proportional to 1,209,429.97, 1,669,013.60 and 665,565.75

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Solution

The fourth proportional to 1,209,429.97, 1,669,013.60 and 665,565.75 is: 918,480.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,429.97 : 1,669,013.60 = 665,565.75 : x
  2. Step 2: Convert to fraction form
    1,209,429.97/1,669,013.60 = 665,565.75/x
  3. Step 3: Cross multiply
    1,209,429.97x = 1,669,013.60 × 665,565.75
  4. Step 4: Simplify right side
    1,209,429.97x = 1,110,838,285,116.37
  5. Step 5: Solve for x
    x = 1,110,838,285,116.37/1,209,429.97
  6. Step 6: Final answer
    x = 918,480.87

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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.