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Finding the Fourth Proportional to 474,647.20, 711,970.80 and 443,312.80

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Solution

The fourth proportional to 474,647.20, 711,970.80 and 443,312.80 is: 664,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,647.20 : 711,970.80 = 443,312.80 : x
  2. Step 2: Convert to fraction form
    474,647.20/711,970.80 = 443,312.80/x
  3. Step 3: Cross multiply
    474,647.20x = 711,970.80 × 443,312.80
  4. Step 4: Simplify right side
    474,647.20x = 315,625,768,866.24
  5. Step 5: Solve for x
    x = 315,625,768,866.24/474,647.20
  6. Step 6: Final answer
    x = 664,969.20

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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.