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Finding the Fourth Proportional to 666,725.97, 920,078.31 and 360,802.17

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Solution

The fourth proportional to 666,725.97, 920,078.31 and 360,802.17 is: 497,905.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,725.97 : 920,078.31 = 360,802.17 : x
  2. Step 2: Convert to fraction form
    666,725.97/920,078.31 = 360,802.17/x
  3. Step 3: Cross multiply
    666,725.97x = 920,078.31 × 360,802.17
  4. Step 4: Simplify right side
    666,725.97x = 331,966,250,817.93
  5. Step 5: Solve for x
    x = 331,966,250,817.93/666,725.97
  6. Step 6: Final answer
    x = 497,905.09

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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.