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Finding the Fourth Proportional to 576,419.70, 864,629.55 and 399,272.70

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Solution

The fourth proportional to 576,419.70, 864,629.55 and 399,272.70 is: 598,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,419.70 : 864,629.55 = 399,272.70 : x
  2. Step 2: Convert to fraction form
    576,419.70/864,629.55 = 399,272.70/x
  3. Step 3: Cross multiply
    576,419.70x = 864,629.55 × 399,272.70
  4. Step 4: Simplify right side
    576,419.70x = 345,222,974,928.29
  5. Step 5: Solve for x
    x = 345,222,974,928.29/576,419.70
  6. Step 6: Final answer
    x = 598,909.05

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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.