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Finding the Fourth Proportional to 553,601.10, 830,401.65 and 419,756.70

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Solution

The fourth proportional to 553,601.10, 830,401.65 and 419,756.70 is: 629,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,601.10 : 830,401.65 = 419,756.70 : x
  2. Step 2: Convert to fraction form
    553,601.10/830,401.65 = 419,756.70/x
  3. Step 3: Cross multiply
    553,601.10x = 830,401.65 × 419,756.70
  4. Step 4: Simplify right side
    553,601.10x = 348,566,656,278.56
  5. Step 5: Solve for x
    x = 348,566,656,278.56/553,601.10
  6. Step 6: Final answer
    x = 629,635.05

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Similar ratio
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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.