Home / 644,631.60-966,607.20-218,020.80

Finding the Fourth Proportional to 644,631.60, 966,607.20 and 218,020.80

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Solution

The fourth proportional to 644,631.60, 966,607.20 and 218,020.80 is: 326,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,631.60 : 966,607.20 = 218,020.80 : x
  2. Step 2: Convert to fraction form
    644,631.60/966,607.20 = 218,020.80/x
  3. Step 3: Cross multiply
    644,631.60x = 966,607.20 × 218,020.80
  4. Step 4: Simplify right side
    644,631.60x = 210,740,475,029.76
  5. Step 5: Solve for x
    x = 210,740,475,029.76/644,631.60
  6. Step 6: Final answer
    x = 326,916.14

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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.