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Finding the Fourth Proportional to 674,920.26, 931,409.40 and 373,133.70

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Solution

The fourth proportional to 674,920.26, 931,409.40 and 373,133.70 is: 514,935.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,920.26 : 931,409.40 = 373,133.70 : x
  2. Step 2: Convert to fraction form
    674,920.26/931,409.40 = 373,133.70/x
  3. Step 3: Cross multiply
    674,920.26x = 931,409.40 × 373,133.70
  4. Step 4: Simplify right side
    674,920.26x = 347,540,235,636.78
  5. Step 5: Solve for x
    x = 347,540,235,636.78/674,920.26
  6. Step 6: Final answer
    x = 514,935.25

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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.