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Finding the Fourth Proportional to 666,294.90, 919,487.12 and 375,968.10

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Solution

The fourth proportional to 666,294.90, 919,487.12 and 375,968.10 is: 518,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,294.90 : 919,487.12 = 375,968.10 : x
  2. Step 2: Convert to fraction form
    666,294.90/919,487.12 = 375,968.10/x
  3. Step 3: Cross multiply
    666,294.90x = 919,487.12 × 375,968.10
  4. Step 4: Simplify right side
    666,294.90x = 345,697,825,480.87
  5. Step 5: Solve for x
    x = 345,697,825,480.87/666,294.90
  6. Step 6: Final answer
    x = 518,836.07

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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.