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Finding the Fourth Proportional to 875,978.20, 1,313,660.10 and 455,114.20

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Solution

The fourth proportional to 875,978.20, 1,313,660.10 and 455,114.20 is: 682,511.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,978.20 : 1,313,660.10 = 455,114.20 : x
  2. Step 2: Convert to fraction form
    875,978.20/1,313,660.10 = 455,114.20/x
  3. Step 3: Cross multiply
    875,978.20x = 1,313,660.10 × 455,114.20
  4. Step 4: Simplify right side
    875,978.20x = 597,865,365,483.42
  5. Step 5: Solve for x
    x = 597,865,365,483.42/875,978.20
  6. Step 6: Final answer
    x = 682,511.69

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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.