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Finding the Fourth Proportional to 553,451.07, 763,819.89 and 338,734.11

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Solution

The fourth proportional to 553,451.07, 763,819.89 and 338,734.11 is: 467,488.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,451.07 : 763,819.89 = 338,734.11 : x
  2. Step 2: Convert to fraction form
    553,451.07/763,819.89 = 338,734.11/x
  3. Step 3: Cross multiply
    553,451.07x = 763,819.89 × 338,734.11
  4. Step 4: Simplify right side
    553,451.07x = 258,731,850,639.45
  5. Step 5: Solve for x
    x = 258,731,850,639.45/553,451.07
  6. Step 6: Final answer
    x = 467,488.21

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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.