Home / 645,440.22-967,995.90-457,664.40

Finding the Fourth Proportional to 645,440.22, 967,995.90 and 457,664.40

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Solution

The fourth proportional to 645,440.22, 967,995.90 and 457,664.40 is: 686,380.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,440.22 : 967,995.90 = 457,664.40 : x
  2. Step 2: Convert to fraction form
    645,440.22/967,995.90 = 457,664.40/x
  3. Step 3: Cross multiply
    645,440.22x = 967,995.90 × 457,664.40
  4. Step 4: Simplify right side
    645,440.22x = 443,017,262,775.96
  5. Step 5: Solve for x
    x = 443,017,262,775.96/645,440.22
  6. Step 6: Final answer
    x = 686,380.01

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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.