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Finding the Fourth Proportional to 666,706.38, 920,057.22 and 360,782.73

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Solution

The fourth proportional to 666,706.38, 920,057.22 and 360,782.73 is: 497,881.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,706.38 : 920,057.22 = 360,782.73 : x
  2. Step 2: Convert to fraction form
    666,706.38/920,057.22 = 360,782.73/x
  3. Step 3: Cross multiply
    666,706.38x = 920,057.22 × 360,782.73
  4. Step 4: Simplify right side
    666,706.38x = 331,940,755,587.81
  5. Step 5: Solve for x
    x = 331,940,755,587.81/666,706.38
  6. Step 6: Final answer
    x = 497,881.47

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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.