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Finding the Fourth Proportional to 579,415.80, 868,086.90 and 473,662.20

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Solution

The fourth proportional to 579,415.80, 868,086.90 and 473,662.20 is: 709,645.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,415.80 : 868,086.90 = 473,662.20 : x
  2. Step 2: Convert to fraction form
    579,415.80/868,086.90 = 473,662.20/x
  3. Step 3: Cross multiply
    579,415.80x = 868,086.90 × 473,662.20
  4. Step 4: Simplify right side
    579,415.80x = 411,179,950,845.18
  5. Step 5: Solve for x
    x = 411,179,950,845.18/579,415.80
  6. Step 6: Final answer
    x = 709,645.73

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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.