Home / 642,670.80-964,006.20-243,324.60

Finding the Fourth Proportional to 642,670.80, 964,006.20 and 243,324.60

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Solution

The fourth proportional to 642,670.80, 964,006.20 and 243,324.60 is: 364,986.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,670.80 : 964,006.20 = 243,324.60 : x
  2. Step 2: Convert to fraction form
    642,670.80/964,006.20 = 243,324.60/x
  3. Step 3: Cross multiply
    642,670.80x = 964,006.20 × 243,324.60
  4. Step 4: Simplify right side
    642,670.80x = 234,566,423,012.52
  5. Step 5: Solve for x
    x = 234,566,423,012.52/642,670.80
  6. Step 6: Final answer
    x = 364,986.90

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Similar ratio
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1.5x scale

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.