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Finding the Fourth Proportional to 579,962.88, 800,347.13 and 321,878.79

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Solution

The fourth proportional to 579,962.88, 800,347.13 and 321,878.79 is: 444,191.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,962.88 : 800,347.13 = 321,878.79 : x
  2. Step 2: Convert to fraction form
    579,962.88/800,347.13 = 321,878.79/x
  3. Step 3: Cross multiply
    579,962.88x = 800,347.13 × 321,878.79
  4. Step 4: Simplify right side
    579,962.88x = 257,614,762,587.33
  5. Step 5: Solve for x
    x = 257,614,762,587.33/579,962.88
  6. Step 6: Final answer
    x = 444,191.82

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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.