Home / 645,643.20-967,850.40-503,409.60

Finding the Fourth Proportional to 645,643.20, 967,850.40 and 503,409.60

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Solution

The fourth proportional to 645,643.20, 967,850.40 and 503,409.60 is: 754,635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,643.20 : 967,850.40 = 503,409.60 : x
  2. Step 2: Convert to fraction form
    645,643.20/967,850.40 = 503,409.60/x
  3. Step 3: Cross multiply
    645,643.20x = 967,850.40 × 503,409.60
  4. Step 4: Simplify right side
    645,643.20x = 487,225,182,723.84
  5. Step 5: Solve for x
    x = 487,225,182,723.84/645,643.20
  6. Step 6: Final answer
    x = 754,635.35

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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.