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Finding the Fourth Proportional to 655,215.54, 904,047.85 and 368,631.06

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Solution

The fourth proportional to 655,215.54, 904,047.85 and 368,631.06 is: 508,626.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,215.54 : 904,047.85 = 368,631.06 : x
  2. Step 2: Convert to fraction form
    655,215.54/904,047.85 = 368,631.06/x
  3. Step 3: Cross multiply
    655,215.54x = 904,047.85 × 368,631.06
  4. Step 4: Simplify right side
    655,215.54x = 333,260,117,236.22
  5. Step 5: Solve for x
    x = 333,260,117,236.22/655,215.54
  6. Step 6: Final answer
    x = 508,626.70

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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.