Home / 878,612.59-1,212,470.94-491,437.05

Finding the Fourth Proportional to 878,612.59, 1,212,470.94 and 491,437.05

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Solution

The fourth proportional to 878,612.59, 1,212,470.94 and 491,437.05 is: 678,175.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,612.59 : 1,212,470.94 = 491,437.05 : x
  2. Step 2: Convert to fraction form
    878,612.59/1,212,470.94 = 491,437.05/x
  3. Step 3: Cross multiply
    878,612.59x = 1,212,470.94 × 491,437.05
  4. Step 4: Simplify right side
    878,612.59x = 595,853,141,964.33
  5. Step 5: Solve for x
    x = 595,853,141,964.33/878,612.59
  6. Step 6: Final answer
    x = 678,175.06

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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.