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Finding the Fourth Proportional to 655,215.13, 904,047.28 and 368,630.65

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Solution

The fourth proportional to 655,215.13, 904,047.28 and 368,630.65 is: 508,626.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,215.13 : 904,047.28 = 368,630.65 : x
  2. Step 2: Convert to fraction form
    655,215.13/904,047.28 = 368,630.65/x
  3. Step 3: Cross multiply
    655,215.13x = 904,047.28 × 368,630.65
  4. Step 4: Simplify right side
    655,215.13x = 333,259,536,457.13
  5. Step 5: Solve for x
    x = 333,259,536,457.13/655,215.13
  6. Step 6: Final answer
    x = 508,626.13

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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.