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Finding the Fourth Proportional to 551,819.34, 761,486.16 and 322,397.85

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Solution

The fourth proportional to 551,819.34, 761,486.16 and 322,397.85 is: 444,894.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,819.34 : 761,486.16 = 322,397.85 : x
  2. Step 2: Convert to fraction form
    551,819.34/761,486.16 = 322,397.85/x
  3. Step 3: Cross multiply
    551,819.34x = 761,486.16 × 322,397.85
  4. Step 4: Simplify right side
    551,819.34x = 245,501,500,788.76
  5. Step 5: Solve for x
    x = 245,501,500,788.76/551,819.34
  6. Step 6: Final answer
    x = 444,894.70

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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.