Home / 818,626.32-1,227,879.54-257,821.20

Finding the Fourth Proportional to 818,626.32, 1,227,879.54 and 257,821.20

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Solution

The fourth proportional to 818,626.32, 1,227,879.54 and 257,821.20 is: 386,712.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,626.32 : 1,227,879.54 = 257,821.20 : x
  2. Step 2: Convert to fraction form
    818,626.32/1,227,879.54 = 257,821.20/x
  3. Step 3: Cross multiply
    818,626.32x = 1,227,879.54 × 257,821.20
  4. Step 4: Simplify right side
    818,626.32x = 316,573,376,458.25
  5. Step 5: Solve for x
    x = 316,573,376,458.25/818,626.32
  6. Step 6: Final answer
    x = 386,712.92

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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.