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Finding the Fourth Proportional to 615,212.80, 922,819.20 and 503,019.70

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Solution

The fourth proportional to 615,212.80, 922,819.20 and 503,019.70 is: 754,529.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,212.80 : 922,819.20 = 503,019.70 : x
  2. Step 2: Convert to fraction form
    615,212.80/922,819.20 = 503,019.70/x
  3. Step 3: Cross multiply
    615,212.80x = 922,819.20 × 503,019.70
  4. Step 4: Simplify right side
    615,212.80x = 464,196,237,138.24
  5. Step 5: Solve for x
    x = 464,196,237,138.24/615,212.80
  6. Step 6: Final answer
    x = 754,529.55

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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.