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Finding the Fourth Proportional to 576,039.70, 864,059.55 and 310,319.20

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Solution

The fourth proportional to 576,039.70, 864,059.55 and 310,319.20 is: 465,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,039.70 : 864,059.55 = 310,319.20 : x
  2. Step 2: Convert to fraction form
    576,039.70/864,059.55 = 310,319.20/x
  3. Step 3: Cross multiply
    576,039.70x = 864,059.55 × 310,319.20
  4. Step 4: Simplify right side
    576,039.70x = 268,134,268,308.36
  5. Step 5: Solve for x
    x = 268,134,268,308.36/576,039.70
  6. Step 6: Final answer
    x = 465,478.80

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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.