Home / 821,680.80-1,232,521.20-538,250.40

Finding the Fourth Proportional to 821,680.80, 1,232,521.20 and 538,250.40

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Solution

The fourth proportional to 821,680.80, 1,232,521.20 and 538,250.40 is: 807,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,680.80 : 1,232,521.20 = 538,250.40 : x
  2. Step 2: Convert to fraction form
    821,680.80/1,232,521.20 = 538,250.40/x
  3. Step 3: Cross multiply
    821,680.80x = 1,232,521.20 × 538,250.40
  4. Step 4: Simplify right side
    821,680.80x = 663,405,028,908.48
  5. Step 5: Solve for x
    x = 663,405,028,908.48/821,680.80
  6. Step 6: Final answer
    x = 807,375.60

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1.5x scale

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.