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Finding the Fourth Proportional to 500,910.30, 691,282.71 and 274,565.34

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Solution

The fourth proportional to 500,910.30, 691,282.71 and 274,565.34 is: 378,914.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,910.30 : 691,282.71 = 274,565.34 : x
  2. Step 2: Convert to fraction form
    500,910.30/691,282.71 = 274,565.34/x
  3. Step 3: Cross multiply
    500,910.30x = 691,282.71 × 274,565.34
  4. Step 4: Simplify right side
    500,910.30x = 189,802,272,307.27
  5. Step 5: Solve for x
    x = 189,802,272,307.27/500,910.30
  6. Step 6: Final answer
    x = 378,914.69

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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.