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Finding the Fourth Proportional to 549,338.40, 823,393.20 and 312,794.40

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Solution

The fourth proportional to 549,338.40, 823,393.20 and 312,794.40 is: 468,841.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,338.40 : 823,393.20 = 312,794.40 : x
  2. Step 2: Convert to fraction form
    549,338.40/823,393.20 = 312,794.40/x
  3. Step 3: Cross multiply
    549,338.40x = 823,393.20 × 312,794.40
  4. Step 4: Simplify right side
    549,338.40x = 257,552,781,958.08
  5. Step 5: Solve for x
    x = 257,552,781,958.08/549,338.40
  6. Step 6: Final answer
    x = 468,841.76

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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.