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Finding the Fourth Proportional to 666,735.88, 920,111.72 and 380,282.62

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Solution

The fourth proportional to 666,735.88, 920,111.72 and 380,282.62 is: 524,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,735.88 : 920,111.72 = 380,282.62 : x
  2. Step 2: Convert to fraction form
    666,735.88/920,111.72 = 380,282.62/x
  3. Step 3: Cross multiply
    666,735.88x = 920,111.72 × 380,282.62
  4. Step 4: Simplify right side
    666,735.88x = 349,902,493,672.89
  5. Step 5: Solve for x
    x = 349,902,493,672.89/666,735.88
  6. Step 6: Final answer
    x = 524,799.26

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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.