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Finding the Fourth Proportional to 655,078.16, 904,006.20 and 368,598.56

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Solution

The fourth proportional to 655,078.16, 904,006.20 and 368,598.56 is: 508,665.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,078.16 : 904,006.20 = 368,598.56 : x
  2. Step 2: Convert to fraction form
    655,078.16/904,006.20 = 368,598.56/x
  3. Step 3: Cross multiply
    655,078.16x = 904,006.20 × 368,598.56
  4. Step 4: Simplify right side
    655,078.16x = 333,215,383,551.07
  5. Step 5: Solve for x
    x = 333,215,383,551.07/655,078.16
  6. Step 6: Final answer
    x = 508,665.08

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1.5x scale

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.