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Finding the Fourth Proportional to 607,037.80, 911,139.90 and 307,856.20

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Solution

The fourth proportional to 607,037.80, 911,139.90 and 307,856.20 is: 462,080.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,037.80 : 911,139.90 = 307,856.20 : x
  2. Step 2: Convert to fraction form
    607,037.80/911,139.90 = 307,856.20/x
  3. Step 3: Cross multiply
    607,037.80x = 911,139.90 × 307,856.20
  4. Step 4: Simplify right side
    607,037.80x = 280,500,067,282.38
  5. Step 5: Solve for x
    x = 280,500,067,282.38/607,037.80
  6. Step 6: Final answer
    x = 462,080.07

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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.