Home / 678,508.80-1,017,763.20-235,276.80

Finding the Fourth Proportional to 678,508.80, 1,017,763.20 and 235,276.80

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Solution

The fourth proportional to 678,508.80, 1,017,763.20 and 235,276.80 is: 352,915.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,508.80 : 1,017,763.20 = 235,276.80 : x
  2. Step 2: Convert to fraction form
    678,508.80/1,017,763.20 = 235,276.80/x
  3. Step 3: Cross multiply
    678,508.80x = 1,017,763.20 × 235,276.80
  4. Step 4: Simplify right side
    678,508.80x = 239,456,068,853.76
  5. Step 5: Solve for x
    x = 239,456,068,853.76/678,508.80
  6. Step 6: Final answer
    x = 352,915.20

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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.