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Finding the Fourth Proportional to 607,489.20, 911,015.10 and 307,870.20

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Solution

The fourth proportional to 607,489.20, 911,015.10 and 307,870.20 is: 461,694.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,489.20 : 911,015.10 = 307,870.20 : x
  2. Step 2: Convert to fraction form
    607,489.20/911,015.10 = 307,870.20/x
  3. Step 3: Cross multiply
    607,489.20x = 911,015.10 × 307,870.20
  4. Step 4: Simplify right side
    607,489.20x = 280,474,401,040.02
  5. Step 5: Solve for x
    x = 280,474,401,040.02/607,489.20
  6. Step 6: Final answer
    x = 461,694.46

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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.