Home / 782,419.68-1,080,401.04-496,447.20

Finding the Fourth Proportional to 782,419.68, 1,080,401.04 and 496,447.20

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Solution

The fourth proportional to 782,419.68, 1,080,401.04 and 496,447.20 is: 685,517.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,419.68 : 1,080,401.04 = 496,447.20 : x
  2. Step 2: Convert to fraction form
    782,419.68/1,080,401.04 = 496,447.20/x
  3. Step 3: Cross multiply
    782,419.68x = 1,080,401.04 × 496,447.20
  4. Step 4: Simplify right side
    782,419.68x = 536,362,071,185.09
  5. Step 5: Solve for x
    x = 536,362,071,185.09/782,419.68
  6. Step 6: Final answer
    x = 685,517.10

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Double scale
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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.