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Finding the Fourth Proportional to 605,823.12, 835,353 and 387,746.28

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Solution

The fourth proportional to 605,823.12, 835,353 and 387,746.28 is: 534,652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,823.12 : 835,353 = 387,746.28 : x
  2. Step 2: Convert to fraction form
    605,823.12/835,353 = 387,746.28/x
  3. Step 3: Cross multiply
    605,823.12x = 835,353 × 387,746.28
  4. Step 4: Simplify right side
    605,823.12x = 323,905,018,236.84
  5. Step 5: Solve for x
    x = 323,905,018,236.84/605,823.12
  6. Step 6: Final answer
    x = 534,652.78

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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.