Home / 721,818.30-1,082,727.45-518,864.70

Finding the Fourth Proportional to 721,818.30, 1,082,727.45 and 518,864.70

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Solution

The fourth proportional to 721,818.30, 1,082,727.45 and 518,864.70 is: 778,297.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,818.30 : 1,082,727.45 = 518,864.70 : x
  2. Step 2: Convert to fraction form
    721,818.30/1,082,727.45 = 518,864.70/x
  3. Step 3: Cross multiply
    721,818.30x = 1,082,727.45 × 518,864.70
  4. Step 4: Simplify right side
    721,818.30x = 561,789,053,526.02
  5. Step 5: Solve for x
    x = 561,789,053,526.02/721,818.30
  6. Step 6: Final answer
    x = 778,297.05

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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.