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Finding the Fourth Proportional to 488,867.40, 732,863.70 and 320,468.40

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Solution

The fourth proportional to 488,867.40, 732,863.70 and 320,468.40 is: 480,415.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,867.40 : 732,863.70 = 320,468.40 : x
  2. Step 2: Convert to fraction form
    488,867.40/732,863.70 = 320,468.40/x
  3. Step 3: Cross multiply
    488,867.40x = 732,863.70 × 320,468.40
  4. Step 4: Simplify right side
    488,867.40x = 234,859,657,357.08
  5. Step 5: Solve for x
    x = 234,859,657,357.08/488,867.40
  6. Step 6: Final answer
    x = 480,415.87

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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.