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Finding the Fourth Proportional to 644,811.20, 967,411.20 and 345,435.20

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Solution

The fourth proportional to 644,811.20, 967,411.20 and 345,435.20 is: 518,256.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,811.20 : 967,411.20 = 345,435.20 : x
  2. Step 2: Convert to fraction form
    644,811.20/967,411.20 = 345,435.20/x
  3. Step 3: Cross multiply
    644,811.20x = 967,411.20 × 345,435.20
  4. Step 4: Simplify right side
    644,811.20x = 334,177,881,354.24
  5. Step 5: Solve for x
    x = 334,177,881,354.24/644,811.20
  6. Step 6: Final answer
    x = 518,256.94

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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.