Home / 664,985.60-997,624.20-328,187.60

Finding the Fourth Proportional to 664,985.60, 997,624.20 and 328,187.60

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Solution

The fourth proportional to 664,985.60, 997,624.20 and 328,187.60 is: 492,353.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,985.60 : 997,624.20 = 328,187.60 : x
  2. Step 2: Convert to fraction form
    664,985.60/997,624.20 = 328,187.60/x
  3. Step 3: Cross multiply
    664,985.60x = 997,624.20 × 328,187.60
  4. Step 4: Simplify right side
    664,985.60x = 327,407,891,899.92
  5. Step 5: Solve for x
    x = 327,407,891,899.92/664,985.60
  6. Step 6: Final answer
    x = 492,353.36

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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.