Home / 521,736.90-782,479.35-217,966.89

Finding the Fourth Proportional to 521,736.90, 782,479.35 and 217,966.89

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Solution

The fourth proportional to 521,736.90, 782,479.35 and 217,966.89 is: 326,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,736.90 : 782,479.35 = 217,966.89 : x
  2. Step 2: Convert to fraction form
    521,736.90/782,479.35 = 217,966.89/x
  3. Step 3: Cross multiply
    521,736.90x = 782,479.35 × 217,966.89
  4. Step 4: Simplify right side
    521,736.90x = 170,554,590,408.72
  5. Step 5: Solve for x
    x = 170,554,590,408.72/521,736.90
  6. Step 6: Final answer
    x = 326,897.70

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1.5x scale

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.