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Finding the Fourth Proportional to 666,898.38, 920,319.81 and 365,092.38

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Solution

The fourth proportional to 666,898.38, 920,319.81 and 365,092.38 is: 503,827.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,898.38 : 920,319.81 = 365,092.38 : x
  2. Step 2: Convert to fraction form
    666,898.38/920,319.81 = 365,092.38/x
  3. Step 3: Cross multiply
    666,898.38x = 920,319.81 × 365,092.38
  4. Step 4: Simplify right side
    666,898.38x = 336,001,749,794.05
  5. Step 5: Solve for x
    x = 336,001,749,794.05/666,898.38
  6. Step 6: Final answer
    x = 503,827.51

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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.