Home / 645,645.20-967,853.40-503,411.60

Finding the Fourth Proportional to 645,645.20, 967,853.40 and 503,411.60

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Solution

The fourth proportional to 645,645.20, 967,853.40 and 503,411.60 is: 754,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,645.20 : 967,853.40 = 503,411.60 : x
  2. Step 2: Convert to fraction form
    645,645.20/967,853.40 = 503,411.60/x
  3. Step 3: Cross multiply
    645,645.20x = 967,853.40 × 503,411.60
  4. Step 4: Simplify right side
    645,645.20x = 487,228,628,659.44
  5. Step 5: Solve for x
    x = 487,228,628,659.44/645,645.20
  6. Step 6: Final answer
    x = 754,638.35

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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.