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Finding the Fourth Proportional to 489,646.76, 675,717.54 and 271,859

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Solution

The fourth proportional to 489,646.76, 675,717.54 and 271,859 is: 375,168.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,646.76 : 675,717.54 = 271,859 : x
  2. Step 2: Convert to fraction form
    489,646.76/675,717.54 = 271,859/x
  3. Step 3: Cross multiply
    489,646.76x = 675,717.54 × 271,859
  4. Step 4: Simplify right side
    489,646.76x = 183,699,894,706.86
  5. Step 5: Solve for x
    x = 183,699,894,706.86/489,646.76
  6. Step 6: Final answer
    x = 375,168.20

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1.5x scale

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.