Home / 756,070.80-1,132,356.60-518,125.20

Finding the Fourth Proportional to 756,070.80, 1,132,356.60 and 518,125.20

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Solution

The fourth proportional to 756,070.80, 1,132,356.60 and 518,125.20 is: 775,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,070.80 : 1,132,356.60 = 518,125.20 : x
  2. Step 2: Convert to fraction form
    756,070.80/1,132,356.60 = 518,125.20/x
  3. Step 3: Cross multiply
    756,070.80x = 1,132,356.60 × 518,125.20
  4. Step 4: Simplify right side
    756,070.80x = 586,702,489,846.32
  5. Step 5: Solve for x
    x = 586,702,489,846.32/756,070.80
  6. Step 6: Final answer
    x = 775,988.82

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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.