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Finding the Fourth Proportional to 665,422.26, 918,301.13 and 407,294.07

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Solution

The fourth proportional to 665,422.26, 918,301.13 and 407,294.07 is: 562,077.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,422.26 : 918,301.13 = 407,294.07 : x
  2. Step 2: Convert to fraction form
    665,422.26/918,301.13 = 407,294.07/x
  3. Step 3: Cross multiply
    665,422.26x = 918,301.13 × 407,294.07
  4. Step 4: Simplify right side
    665,422.26x = 374,018,604,723.30
  5. Step 5: Solve for x
    x = 374,018,604,723.30/665,422.26
  6. Step 6: Final answer
    x = 562,077.09

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.