Home / 1,018,388.20-1,405,398-559,508.68

Finding the Fourth Proportional to 1,018,388.20, 1,405,398 and 559,508.68

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Solution

The fourth proportional to 1,018,388.20, 1,405,398 and 559,508.68 is: 772,134.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,388.20 : 1,405,398 = 559,508.68 : x
  2. Step 2: Convert to fraction form
    1,018,388.20/1,405,398 = 559,508.68/x
  3. Step 3: Cross multiply
    1,018,388.20x = 1,405,398 × 559,508.68
  4. Step 4: Simplify right side
    1,018,388.20x = 786,332,379,854.64
  5. Step 5: Solve for x
    x = 786,332,379,854.64/1,018,388.20
  6. Step 6: Final answer
    x = 772,134.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.