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Finding the Fourth Proportional to 655,018.12, 903,933.32 and 368,538.76

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Solution

The fourth proportional to 655,018.12, 903,933.32 and 368,538.76 is: 508,588.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,018.12 : 903,933.32 = 368,538.76 : x
  2. Step 2: Convert to fraction form
    655,018.12/903,933.32 = 368,538.76/x
  3. Step 3: Cross multiply
    655,018.12x = 903,933.32 × 368,538.76
  4. Step 4: Simplify right side
    655,018.12x = 333,134,464,875.48
  5. Step 5: Solve for x
    x = 333,134,464,875.48/655,018.12
  6. Step 6: Final answer
    x = 508,588.17

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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.