Home / 787,629.60-1,180,666.80-387,943.20

Finding the Fourth Proportional to 787,629.60, 1,180,666.80 and 387,943.20

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Solution

The fourth proportional to 787,629.60, 1,180,666.80 and 387,943.20 is: 581,531.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,629.60 : 1,180,666.80 = 387,943.20 : x
  2. Step 2: Convert to fraction form
    787,629.60/1,180,666.80 = 387,943.20/x
  3. Step 3: Cross multiply
    787,629.60x = 1,180,666.80 × 387,943.20
  4. Step 4: Simplify right side
    787,629.60x = 458,031,656,525.76
  5. Step 5: Solve for x
    x = 458,031,656,525.76/787,629.60
  6. Step 6: Final answer
    x = 581,531.80

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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.