Home / 1,328,781.43-1,993,434.45-487,340.47

Finding the Fourth Proportional to 1,328,781.43, 1,993,434.45 and 487,340.47

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Solution

The fourth proportional to 1,328,781.43, 1,993,434.45 and 487,340.47 is: 731,106.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,781.43 : 1,993,434.45 = 487,340.47 : x
  2. Step 2: Convert to fraction form
    1,328,781.43/1,993,434.45 = 487,340.47/x
  3. Step 3: Cross multiply
    1,328,781.43x = 1,993,434.45 × 487,340.47
  4. Step 4: Simplify right side
    1,328,781.43x = 971,481,281,777.19
  5. Step 5: Solve for x
    x = 971,481,281,777.19/1,328,781.43
  6. Step 6: Final answer
    x = 731,106.91

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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.