Home / 644,431.10-967,679.40-512,409.20

Finding the Fourth Proportional to 644,431.10, 967,679.40 and 512,409.20

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Solution

The fourth proportional to 644,431.10, 967,679.40 and 512,409.20 is: 769,434.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,431.10 : 967,679.40 = 512,409.20 : x
  2. Step 2: Convert to fraction form
    644,431.10/967,679.40 = 512,409.20/x
  3. Step 3: Cross multiply
    644,431.10x = 967,679.40 × 512,409.20
  4. Step 4: Simplify right side
    644,431.10x = 495,847,827,210.48
  5. Step 5: Solve for x
    x = 495,847,827,210.48/644,431.10
  6. Step 6: Final answer
    x = 769,434.97

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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.