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Finding the Fourth Proportional to 546,415.20, 819,622.80 and 386,982.90

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Solution

The fourth proportional to 546,415.20, 819,622.80 and 386,982.90 is: 580,474.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,415.20 : 819,622.80 = 386,982.90 : x
  2. Step 2: Convert to fraction form
    546,415.20/819,622.80 = 386,982.90/x
  3. Step 3: Cross multiply
    546,415.20x = 819,622.80 × 386,982.90
  4. Step 4: Simplify right side
    546,415.20x = 317,180,008,050.12
  5. Step 5: Solve for x
    x = 317,180,008,050.12/546,415.20
  6. Step 6: Final answer
    x = 580,474.35

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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.