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Finding the Fourth Proportional to 489,645.29, 675,714.45 and 274,836.02

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Solution

The fourth proportional to 489,645.29, 675,714.45 and 274,836.02 is: 379,275.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,645.29 : 675,714.45 = 274,836.02 : x
  2. Step 2: Convert to fraction form
    489,645.29/675,714.45 = 274,836.02/x
  3. Step 3: Cross multiply
    489,645.29x = 675,714.45 × 274,836.02
  4. Step 4: Simplify right side
    489,645.29x = 185,710,666,715.92
  5. Step 5: Solve for x
    x = 185,710,666,715.92/489,645.29
  6. Step 6: Final answer
    x = 379,275.92

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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.