Home / 947,120.80-1,307,010.22-517,389.88

Finding the Fourth Proportional to 947,120.80, 1,307,010.22 and 517,389.88

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Solution

The fourth proportional to 947,120.80, 1,307,010.22 and 517,389.88 is: 713,989.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,120.80 : 1,307,010.22 = 517,389.88 : x
  2. Step 2: Convert to fraction form
    947,120.80/1,307,010.22 = 517,389.88/x
  3. Step 3: Cross multiply
    947,120.80x = 1,307,010.22 × 517,389.88
  4. Step 4: Simplify right side
    947,120.80x = 676,233,860,884.57
  5. Step 5: Solve for x
    x = 676,233,860,884.57/947,120.80
  6. Step 6: Final answer
    x = 713,989.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.