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Finding the Fourth Proportional to 666,755.74, 920,115.75 and 360,825.36

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Solution

The fourth proportional to 666,755.74, 920,115.75 and 360,825.36 is: 497,935.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,755.74 : 920,115.75 = 360,825.36 : x
  2. Step 2: Convert to fraction form
    666,755.74/920,115.75 = 360,825.36/x
  3. Step 3: Cross multiply
    666,755.74x = 920,115.75 × 360,825.36
  4. Step 4: Simplify right side
    666,755.74x = 332,001,096,735.42
  5. Step 5: Solve for x
    x = 332,001,096,735.42/666,755.74
  6. Step 6: Final answer
    x = 497,935.12

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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.