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Finding the Fourth Proportional to 503,544.80, 693,568.11 and 387,035.47

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Solution

The fourth proportional to 503,544.80, 693,568.11 and 387,035.47 is: 533,091.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,544.80 : 693,568.11 = 387,035.47 : x
  2. Step 2: Convert to fraction form
    503,544.80/693,568.11 = 387,035.47/x
  3. Step 3: Cross multiply
    503,544.80x = 693,568.11 × 387,035.47
  4. Step 4: Simplify right side
    503,544.80x = 268,435,459,430.86
  5. Step 5: Solve for x
    x = 268,435,459,430.86/503,544.80
  6. Step 6: Final answer
    x = 533,091.51

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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.