Home / 817,999.70-1,226,999.55-518,818.10

Finding the Fourth Proportional to 817,999.70, 1,226,999.55 and 518,818.10

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Solution

The fourth proportional to 817,999.70, 1,226,999.55 and 518,818.10 is: 778,227.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,999.70 : 1,226,999.55 = 518,818.10 : x
  2. Step 2: Convert to fraction form
    817,999.70/1,226,999.55 = 518,818.10/x
  3. Step 3: Cross multiply
    817,999.70x = 1,226,999.55 × 518,818.10
  4. Step 4: Simplify right side
    817,999.70x = 636,589,575,231.86
  5. Step 5: Solve for x
    x = 636,589,575,231.86/817,999.70
  6. Step 6: Final answer
    x = 778,227.15

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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.