Home / 439,972.78-607,171.04-287,108.77

Finding the Fourth Proportional to 439,972.78, 607,171.04 and 287,108.77

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Solution

The fourth proportional to 439,972.78, 607,171.04 and 287,108.77 is: 396,215.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,972.78 : 607,171.04 = 287,108.77 : x
  2. Step 2: Convert to fraction form
    439,972.78/607,171.04 = 287,108.77/x
  3. Step 3: Cross multiply
    439,972.78x = 607,171.04 × 287,108.77
  4. Step 4: Simplify right side
    439,972.78x = 174,324,130,474.02
  5. Step 5: Solve for x
    x = 174,324,130,474.02/439,972.78
  6. Step 6: Final answer
    x = 396,215.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.