Home / 638,403.02-958,689.20-426,532.43

Finding the Fourth Proportional to 638,403.02, 958,689.20 and 426,532.43

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Solution

The fourth proportional to 638,403.02, 958,689.20 and 426,532.43 is: 640,523.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,403.02 : 958,689.20 = 426,532.43 : x
  2. Step 2: Convert to fraction form
    638,403.02/958,689.20 = 426,532.43/x
  3. Step 3: Cross multiply
    638,403.02x = 958,689.20 × 426,532.43
  4. Step 4: Simplify right side
    638,403.02x = 408,912,037,553.81
  5. Step 5: Solve for x
    x = 408,912,037,553.81/638,403.02
  6. Step 6: Final answer
    x = 640,523.35

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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.