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Finding the Fourth Proportional to 655,223.76, 904,198.20 and 368,743.68

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Solution

The fourth proportional to 655,223.76, 904,198.20 and 368,743.68 is: 508,860.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,223.76 : 904,198.20 = 368,743.68 : x
  2. Step 2: Convert to fraction form
    655,223.76/904,198.20 = 368,743.68/x
  3. Step 3: Cross multiply
    655,223.76x = 904,198.20 × 368,743.68
  4. Step 4: Simplify right side
    655,223.76x = 333,417,371,717.38
  5. Step 5: Solve for x
    x = 333,417,371,717.38/655,223.76
  6. Step 6: Final answer
    x = 508,860.32

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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.