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Finding the Fourth Proportional to 572,029.80, 858,044.70 and 421,454.85

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Solution

The fourth proportional to 572,029.80, 858,044.70 and 421,454.85 is: 632,182.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,029.80 : 858,044.70 = 421,454.85 : x
  2. Step 2: Convert to fraction form
    572,029.80/858,044.70 = 421,454.85/x
  3. Step 3: Cross multiply
    572,029.80x = 858,044.70 × 421,454.85
  4. Step 4: Simplify right side
    572,029.80x = 361,627,100,331.80
  5. Step 5: Solve for x
    x = 361,627,100,331.80/572,029.80
  6. Step 6: Final answer
    x = 632,182.28

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Similar ratio
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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.