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Finding the Fourth Proportional to 666,502.02, 919,727.13 and 380,034.18

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Solution

The fourth proportional to 666,502.02, 919,727.13 and 380,034.18 is: 524,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,502.02 : 919,727.13 = 380,034.18 : x
  2. Step 2: Convert to fraction form
    666,502.02/919,727.13 = 380,034.18/x
  3. Step 3: Cross multiply
    666,502.02x = 919,727.13 × 380,034.18
  4. Step 4: Simplify right side
    666,502.02x = 349,527,745,673.30
  5. Step 5: Solve for x
    x = 349,527,745,673.30/666,502.02
  6. Step 6: Final answer
    x = 524,421.13

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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.