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Finding the Fourth Proportional to 576,056.40, 864,084.60 and 396,430.80

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Solution

The fourth proportional to 576,056.40, 864,084.60 and 396,430.80 is: 594,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,056.40 : 864,084.60 = 396,430.80 : x
  2. Step 2: Convert to fraction form
    576,056.40/864,084.60 = 396,430.80/x
  3. Step 3: Cross multiply
    576,056.40x = 864,084.60 × 396,430.80
  4. Step 4: Simplify right side
    576,056.40x = 342,549,749,245.68
  5. Step 5: Solve for x
    x = 342,549,749,245.68/576,056.40
  6. Step 6: Final answer
    x = 594,646.20

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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.