Home / 820,939.20-1,229,335.20-538,929.60

Finding the Fourth Proportional to 820,939.20, 1,229,335.20 and 538,929.60

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Solution

The fourth proportional to 820,939.20, 1,229,335.20 and 538,929.60 is: 807,033.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,939.20 : 1,229,335.20 = 538,929.60 : x
  2. Step 2: Convert to fraction form
    820,939.20/1,229,335.20 = 538,929.60/x
  3. Step 3: Cross multiply
    820,939.20x = 1,229,335.20 × 538,929.60
  4. Step 4: Simplify right side
    820,939.20x = 662,525,127,601.92
  5. Step 5: Solve for x
    x = 662,525,127,601.92/820,939.20
  6. Step 6: Final answer
    x = 807,033.12

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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.