Home / 644,427.10-967,673.40-512,405.20

Finding the Fourth Proportional to 644,427.10, 967,673.40 and 512,405.20

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Solution

The fourth proportional to 644,427.10, 967,673.40 and 512,405.20 is: 769,428.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,427.10 : 967,673.40 = 512,405.20 : x
  2. Step 2: Convert to fraction form
    644,427.10/967,673.40 = 512,405.20/x
  3. Step 3: Cross multiply
    644,427.10x = 967,673.40 × 512,405.20
  4. Step 4: Simplify right side
    644,427.10x = 495,840,882,061.68
  5. Step 5: Solve for x
    x = 495,840,882,061.68/644,427.10
  6. Step 6: Final answer
    x = 769,428.97

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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.