Home / 939,135.60-1,407,666.60-518,713.20

Finding the Fourth Proportional to 939,135.60, 1,407,666.60 and 518,713.20

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Solution

The fourth proportional to 939,135.60, 1,407,666.60 and 518,713.20 is: 777,497.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,135.60 : 1,407,666.60 = 518,713.20 : x
  2. Step 2: Convert to fraction form
    939,135.60/1,407,666.60 = 518,713.20/x
  3. Step 3: Cross multiply
    939,135.60x = 1,407,666.60 × 518,713.20
  4. Step 4: Simplify right side
    939,135.60x = 730,175,246,619.12
  5. Step 5: Solve for x
    x = 730,175,246,619.12/939,135.60
  6. Step 6: Final answer
    x = 777,497.14

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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.