Home / 1,105,385.55-1,658,839.77-385,731.33

Finding the Fourth Proportional to 1,105,385.55, 1,658,839.77 and 385,731.33

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Solution

The fourth proportional to 1,105,385.55, 1,658,839.77 and 385,731.33 is: 578,862.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,385.55 : 1,658,839.77 = 385,731.33 : x
  2. Step 2: Convert to fraction form
    1,105,385.55/1,658,839.77 = 385,731.33/x
  3. Step 3: Cross multiply
    1,105,385.55x = 1,658,839.77 × 385,731.33
  4. Step 4: Simplify right side
    1,105,385.55x = 639,866,470,738.99
  5. Step 5: Solve for x
    x = 639,866,470,738.99/1,105,385.55
  6. Step 6: Final answer
    x = 578,862.71

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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.