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Finding the Fourth Proportional to 439,875.82, 660,145.38 and 321,851.62

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Solution

The fourth proportional to 439,875.82, 660,145.38 and 321,851.62 is: 483,020.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,875.82 : 660,145.38 = 321,851.62 : x
  2. Step 2: Convert to fraction form
    439,875.82/660,145.38 = 321,851.62/x
  3. Step 3: Cross multiply
    439,875.82x = 660,145.38 × 321,851.62
  4. Step 4: Simplify right side
    439,875.82x = 212,468,859,988.52
  5. Step 5: Solve for x
    x = 212,468,859,988.52/439,875.82
  6. Step 6: Final answer
    x = 483,020.09

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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.