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Finding the Fourth Proportional to 579,861.72, 800,218.08 and 350,386.92

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Solution

The fourth proportional to 579,861.72, 800,218.08 and 350,386.92 is: 483,539.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,861.72 : 800,218.08 = 350,386.92 : x
  2. Step 2: Convert to fraction form
    579,861.72/800,218.08 = 350,386.92/x
  3. Step 3: Cross multiply
    579,861.72x = 800,218.08 × 350,386.92
  4. Step 4: Simplify right side
    579,861.72x = 280,385,948,379.51
  5. Step 5: Solve for x
    x = 280,385,948,379.51/579,861.72
  6. Step 6: Final answer
    x = 483,539.33

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Double scale
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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.