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Finding the Fourth Proportional to 645,467.20, 968,200.80 and 496,459.60

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Solution

The fourth proportional to 645,467.20, 968,200.80 and 496,459.60 is: 744,689.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,467.20 : 968,200.80 = 496,459.60 : x
  2. Step 2: Convert to fraction form
    645,467.20/968,200.80 = 496,459.60/x
  3. Step 3: Cross multiply
    645,467.20x = 968,200.80 × 496,459.60
  4. Step 4: Simplify right side
    645,467.20x = 480,672,581,887.68
  5. Step 5: Solve for x
    x = 480,672,581,887.68/645,467.20
  6. Step 6: Final answer
    x = 744,689.40

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Similar ratio
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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.