Home / 820,910.70-1,229,292.45-538,901.10

Finding the Fourth Proportional to 820,910.70, 1,229,292.45 and 538,901.10

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Solution

The fourth proportional to 820,910.70, 1,229,292.45 and 538,901.10 is: 806,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,910.70 : 1,229,292.45 = 538,901.10 : x
  2. Step 2: Convert to fraction form
    820,910.70/1,229,292.45 = 538,901.10/x
  3. Step 3: Cross multiply
    820,910.70x = 1,229,292.45 × 538,901.10
  4. Step 4: Simplify right side
    820,910.70x = 662,467,053,526.70
  5. Step 5: Solve for x
    x = 662,467,053,526.70/820,910.70
  6. Step 6: Final answer
    x = 806,990.40

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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.