Home / 1,290,979.32-1,781,426.76-747,006.80

Finding the Fourth Proportional to 1,290,979.32, 1,781,426.76 and 747,006.80

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Solution

The fourth proportional to 1,290,979.32, 1,781,426.76 and 747,006.80 is: 1,030,797.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,979.32 : 1,781,426.76 = 747,006.80 : x
  2. Step 2: Convert to fraction form
    1,290,979.32/1,781,426.76 = 747,006.80/x
  3. Step 3: Cross multiply
    1,290,979.32x = 1,781,426.76 × 747,006.80
  4. Step 4: Simplify right side
    1,290,979.32x = 1,330,737,903,421.97
  5. Step 5: Solve for x
    x = 1,330,737,903,421.97/1,290,979.32
  6. Step 6: Final answer
    x = 1,030,797.23

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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.