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Finding the Fourth Proportional to 543,445.80, 814,431.42 and 306,671.40

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Solution

The fourth proportional to 543,445.80, 814,431.42 and 306,671.40 is: 459,591.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,445.80 : 814,431.42 = 306,671.40 : x
  2. Step 2: Convert to fraction form
    543,445.80/814,431.42 = 306,671.40/x
  3. Step 3: Cross multiply
    543,445.80x = 814,431.42 × 306,671.40
  4. Step 4: Simplify right side
    543,445.80x = 249,762,823,775.39
  5. Step 5: Solve for x
    x = 249,762,823,775.39/543,445.80
  6. Step 6: Final answer
    x = 459,591.05

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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.