Home / 432,386.72-644,231.16-408,242.24

Finding the Fourth Proportional to 432,386.72, 644,231.16 and 408,242.24

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Solution

The fourth proportional to 432,386.72, 644,231.16 and 408,242.24 is: 608,257.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,386.72 : 644,231.16 = 408,242.24 : x
  2. Step 2: Convert to fraction form
    432,386.72/644,231.16 = 408,242.24/x
  3. Step 3: Cross multiply
    432,386.72x = 644,231.16 × 408,242.24
  4. Step 4: Simplify right side
    432,386.72x = 263,002,371,836.20
  5. Step 5: Solve for x
    x = 263,002,371,836.20/432,386.72
  6. Step 6: Final answer
    x = 608,257.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.