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Finding the Fourth Proportional to 674,653.05, 931,019.03 and 368,729.42

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Solution

The fourth proportional to 674,653.05, 931,019.03 and 368,729.42 is: 508,845.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,653.05 : 931,019.03 = 368,729.42 : x
  2. Step 2: Convert to fraction form
    674,653.05/931,019.03 = 368,729.42/x
  3. Step 3: Cross multiply
    674,653.05x = 931,019.03 × 368,729.42
  4. Step 4: Simplify right side
    674,653.05x = 343,294,101,824.86
  5. Step 5: Solve for x
    x = 343,294,101,824.86/674,653.05
  6. Step 6: Final answer
    x = 508,845.40

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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.