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Finding the Fourth Proportional to 630,441.70, 945,662.55 and 314,947.30

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Solution

The fourth proportional to 630,441.70, 945,662.55 and 314,947.30 is: 472,420.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,441.70 : 945,662.55 = 314,947.30 : x
  2. Step 2: Convert to fraction form
    630,441.70/945,662.55 = 314,947.30/x
  3. Step 3: Cross multiply
    630,441.70x = 945,662.55 × 314,947.30
  4. Step 4: Simplify right side
    630,441.70x = 297,833,866,833.62
  5. Step 5: Solve for x
    x = 297,833,866,833.62/630,441.70
  6. Step 6: Final answer
    x = 472,420.95

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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.