Home / 644,647.60-966,631.20-218,036.80

Finding the Fourth Proportional to 644,647.60, 966,631.20 and 218,036.80

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Solution

The fourth proportional to 644,647.60, 966,631.20 and 218,036.80 is: 326,940.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,647.60 : 966,631.20 = 218,036.80 : x
  2. Step 2: Convert to fraction form
    644,647.60/966,631.20 = 218,036.80/x
  3. Step 3: Cross multiply
    644,647.60x = 966,631.20 × 218,036.80
  4. Step 4: Simplify right side
    644,647.60x = 210,761,173,628.16
  5. Step 5: Solve for x
    x = 210,761,173,628.16/644,647.60
  6. Step 6: Final answer
    x = 326,940.14

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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.