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Finding the Fourth Proportional to 674,250.75, 930,071.97 and 419,683.95

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Solution

The fourth proportional to 674,250.75, 930,071.97 and 419,683.95 is: 578,918.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,250.75 : 930,071.97 = 419,683.95 : x
  2. Step 2: Convert to fraction form
    674,250.75/930,071.97 = 419,683.95/x
  3. Step 3: Cross multiply
    674,250.75x = 930,071.97 × 419,683.95
  4. Step 4: Simplify right side
    674,250.75x = 390,336,278,153.88
  5. Step 5: Solve for x
    x = 390,336,278,153.88/674,250.75
  6. Step 6: Final answer
    x = 578,918.57

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1.5x scale

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.