Home / 911,432.13-1,367,257.55-312,500.31

Finding the Fourth Proportional to 911,432.13, 1,367,257.55 and 312,500.31

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Solution

The fourth proportional to 911,432.13, 1,367,257.55 and 312,500.31 is: 468,787.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,432.13 : 1,367,257.55 = 312,500.31 : x
  2. Step 2: Convert to fraction form
    911,432.13/1,367,257.55 = 312,500.31/x
  3. Step 3: Cross multiply
    911,432.13x = 1,367,257.55 × 312,500.31
  4. Step 4: Simplify right side
    911,432.13x = 427,268,406,662.34
  5. Step 5: Solve for x
    x = 427,268,406,662.34/911,432.13
  6. Step 6: Final answer
    x = 468,787.96

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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.