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Finding the Fourth Proportional to 655,215.95, 904,048.40 and 368,631.47

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Solution

The fourth proportional to 655,215.95, 904,048.40 and 368,631.47 is: 508,627.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,215.95 : 904,048.40 = 368,631.47 : x
  2. Step 2: Convert to fraction form
    655,215.95/904,048.40 = 368,631.47/x
  3. Step 3: Cross multiply
    655,215.95x = 904,048.40 × 368,631.47
  4. Step 4: Simplify right side
    655,215.95x = 333,260,693,824.85
  5. Step 5: Solve for x
    x = 333,260,693,824.85/655,215.95
  6. Step 6: Final answer
    x = 508,627.26

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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.