Home / 645,421.20-968,002.20-308,461.20

Finding the Fourth Proportional to 645,421.20, 968,002.20 and 308,461.20

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Solution

The fourth proportional to 645,421.20, 968,002.20 and 308,461.20 is: 462,629.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,421.20 : 968,002.20 = 308,461.20 : x
  2. Step 2: Convert to fraction form
    645,421.20/968,002.20 = 308,461.20/x
  3. Step 3: Cross multiply
    645,421.20x = 968,002.20 × 308,461.20
  4. Step 4: Simplify right side
    645,421.20x = 298,591,120,214.64
  5. Step 5: Solve for x
    x = 298,591,120,214.64/645,421.20
  6. Step 6: Final answer
    x = 462,629.86

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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.