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Finding the Fourth Proportional to 553,591.35, 828,503.61 and 340,246.76

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Solution

The fourth proportional to 553,591.35, 828,503.61 and 340,246.76 is: 509,212.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,591.35 : 828,503.61 = 340,246.76 : x
  2. Step 2: Convert to fraction form
    553,591.35/828,503.61 = 340,246.76/x
  3. Step 3: Cross multiply
    553,591.35x = 828,503.61 × 340,246.76
  4. Step 4: Simplify right side
    553,591.35x = 281,895,668,950.80
  5. Step 5: Solve for x
    x = 281,895,668,950.80/553,591.35
  6. Step 6: Final answer
    x = 509,212.56

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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.