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Finding the Fourth Proportional to 655,754.13, 904,981.82 and 397,812.06

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Solution

The fourth proportional to 655,754.13, 904,981.82 and 397,812.06 is: 549,005.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,754.13 : 904,981.82 = 397,812.06 : x
  2. Step 2: Convert to fraction form
    655,754.13/904,981.82 = 397,812.06/x
  3. Step 3: Cross multiply
    655,754.13x = 904,981.82 × 397,812.06
  4. Step 4: Simplify right side
    655,754.13x = 360,012,680,087.69
  5. Step 5: Solve for x
    x = 360,012,680,087.69/655,754.13
  6. Step 6: Final answer
    x = 549,005.59

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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.