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Finding the Fourth Proportional to 666,145.96, 919,258.68 and 379,758.36

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Solution

The fourth proportional to 666,145.96, 919,258.68 and 379,758.36 is: 524,053.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,145.96 : 919,258.68 = 379,758.36 : x
  2. Step 2: Convert to fraction form
    666,145.96/919,258.68 = 379,758.36/x
  3. Step 3: Cross multiply
    666,145.96x = 919,258.68 × 379,758.36
  4. Step 4: Simplify right side
    666,145.96x = 349,096,168,732.57
  5. Step 5: Solve for x
    x = 349,096,168,732.57/666,145.96
  6. Step 6: Final answer
    x = 524,053.57

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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.