Home / 753,630.40-1,130,445.60-280,217.80

Finding the Fourth Proportional to 753,630.40, 1,130,445.60 and 280,217.80

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Solution

The fourth proportional to 753,630.40, 1,130,445.60 and 280,217.80 is: 420,326.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,630.40 : 1,130,445.60 = 280,217.80 : x
  2. Step 2: Convert to fraction form
    753,630.40/1,130,445.60 = 280,217.80/x
  3. Step 3: Cross multiply
    753,630.40x = 1,130,445.60 × 280,217.80
  4. Step 4: Simplify right side
    753,630.40x = 316,770,979,051.68
  5. Step 5: Solve for x
    x = 316,770,979,051.68/753,630.40
  6. Step 6: Final answer
    x = 420,326.70

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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.