Home / 1,270,886.20-1,906,329.30-429,425.80

Finding the Fourth Proportional to 1,270,886.20, 1,906,329.30 and 429,425.80

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Solution

The fourth proportional to 1,270,886.20, 1,906,329.30 and 429,425.80 is: 644,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,886.20 : 1,906,329.30 = 429,425.80 : x
  2. Step 2: Convert to fraction form
    1,270,886.20/1,906,329.30 = 429,425.80/x
  3. Step 3: Cross multiply
    1,270,886.20x = 1,906,329.30 × 429,425.80
  4. Step 4: Simplify right side
    1,270,886.20x = 818,626,984,715.94
  5. Step 5: Solve for x
    x = 818,626,984,715.94/1,270,886.20
  6. Step 6: Final answer
    x = 644,138.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.