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Finding the Fourth Proportional to 674,679.44, 931,021.08 and 372,854

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Solution

The fourth proportional to 674,679.44, 931,021.08 and 372,854 is: 514,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,679.44 : 931,021.08 = 372,854 : x
  2. Step 2: Convert to fraction form
    674,679.44/931,021.08 = 372,854/x
  3. Step 3: Cross multiply
    674,679.44x = 931,021.08 × 372,854
  4. Step 4: Simplify right side
    674,679.44x = 347,134,933,762.32
  5. Step 5: Solve for x
    x = 347,134,933,762.32/674,679.44
  6. Step 6: Final answer
    x = 514,518.32

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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.