Home / 680,726.88-1,021,549.68-512,371.62

Finding the Fourth Proportional to 680,726.88, 1,021,549.68 and 512,371.62

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Solution

The fourth proportional to 680,726.88, 1,021,549.68 and 512,371.62 is: 768,903.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,726.88 : 1,021,549.68 = 512,371.62 : x
  2. Step 2: Convert to fraction form
    680,726.88/1,021,549.68 = 512,371.62/x
  3. Step 3: Cross multiply
    680,726.88x = 1,021,549.68 × 512,371.62
  4. Step 4: Simplify right side
    680,726.88x = 523,413,064,452.08
  5. Step 5: Solve for x
    x = 523,413,064,452.08/680,726.88
  6. Step 6: Final answer
    x = 768,903.18

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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.