Home / 878,003.52-1,211,705.76-495,890.88

Finding the Fourth Proportional to 878,003.52, 1,211,705.76 and 495,890.88

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Solution

The fourth proportional to 878,003.52, 1,211,705.76 and 495,890.88 is: 684,363.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,003.52 : 1,211,705.76 = 495,890.88 : x
  2. Step 2: Convert to fraction form
    878,003.52/1,211,705.76 = 495,890.88/x
  3. Step 3: Cross multiply
    878,003.52x = 1,211,705.76 × 495,890.88
  4. Step 4: Simplify right side
    878,003.52x = 600,873,835,627.47
  5. Step 5: Solve for x
    x = 600,873,835,627.47/878,003.52
  6. Step 6: Final answer
    x = 684,363.81

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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.