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Finding the Fourth Proportional to 666,724.97, 920,076.93 and 360,801.17

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Solution

The fourth proportional to 666,724.97, 920,076.93 and 360,801.17 is: 497,903.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,724.97 : 920,076.93 = 360,801.17 : x
  2. Step 2: Convert to fraction form
    666,724.97/920,076.93 = 360,801.17/x
  3. Step 3: Cross multiply
    666,724.97x = 920,076.93 × 360,801.17
  4. Step 4: Simplify right side
    666,724.97x = 331,964,832,834.01
  5. Step 5: Solve for x
    x = 331,964,832,834.01/666,724.97
  6. Step 6: Final answer
    x = 497,903.71

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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.