Home / 820,183.80-1,230,275.70-687,473.40

Finding the Fourth Proportional to 820,183.80, 1,230,275.70 and 687,473.40

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Solution

The fourth proportional to 820,183.80, 1,230,275.70 and 687,473.40 is: 1,031,210.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,183.80 : 1,230,275.70 = 687,473.40 : x
  2. Step 2: Convert to fraction form
    820,183.80/1,230,275.70 = 687,473.40/x
  3. Step 3: Cross multiply
    820,183.80x = 1,230,275.70 × 687,473.40
  4. Step 4: Simplify right side
    820,183.80x = 845,781,818,416.38
  5. Step 5: Solve for x
    x = 845,781,818,416.38/820,183.80
  6. Step 6: Final answer
    x = 1,031,210.10

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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.