Home / 489,819.72-675,981.42-326,195.64

Finding the Fourth Proportional to 489,819.72, 675,981.42 and 326,195.64

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Solution

The fourth proportional to 489,819.72, 675,981.42 and 326,195.64 is: 450,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,819.72 : 675,981.42 = 326,195.64 : x
  2. Step 2: Convert to fraction form
    489,819.72/675,981.42 = 326,195.64/x
  3. Step 3: Cross multiply
    489,819.72x = 675,981.42 × 326,195.64
  4. Step 4: Simplify right side
    489,819.72x = 220,502,191,925.01
  5. Step 5: Solve for x
    x = 220,502,191,925.01/489,819.72
  6. Step 6: Final answer
    x = 450,170.10

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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.