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Finding the Fourth Proportional to 572,703.85, 858,490.80 and 320,105.35

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Solution

The fourth proportional to 572,703.85, 858,490.80 and 320,105.35 is: 479,842.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,703.85 : 858,490.80 = 320,105.35 : x
  2. Step 2: Convert to fraction form
    572,703.85/858,490.80 = 320,105.35/x
  3. Step 3: Cross multiply
    572,703.85x = 858,490.80 × 320,105.35
  4. Step 4: Simplify right side
    572,703.85x = 274,807,498,005.78
  5. Step 5: Solve for x
    x = 274,807,498,005.78/572,703.85
  6. Step 6: Final answer
    x = 479,842.24

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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.