Home / 644,812.20-967,412.70-345,436.20

Finding the Fourth Proportional to 644,812.20, 967,412.70 and 345,436.20

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Solution

The fourth proportional to 644,812.20, 967,412.70 and 345,436.20 is: 518,258.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,812.20 : 967,412.70 = 345,436.20 : x
  2. Step 2: Convert to fraction form
    644,812.20/967,412.70 = 345,436.20/x
  3. Step 3: Cross multiply
    644,812.20x = 967,412.70 × 345,436.20
  4. Step 4: Simplify right side
    644,812.20x = 334,179,366,919.74
  5. Step 5: Solve for x
    x = 334,179,366,919.74/644,812.20
  6. Step 6: Final answer
    x = 518,258.44

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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.