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Finding the Fourth Proportional to 680,491.35, 939,042.27 and 374,509.25

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Solution

The fourth proportional to 680,491.35, 939,042.27 and 374,509.25 is: 516,803.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,491.35 : 939,042.27 = 374,509.25 : x
  2. Step 2: Convert to fraction form
    680,491.35/939,042.27 = 374,509.25/x
  3. Step 3: Cross multiply
    680,491.35x = 939,042.27 × 374,509.25
  4. Step 4: Simplify right side
    680,491.35x = 351,680,012,965.20
  5. Step 5: Solve for x
    x = 351,680,012,965.20/680,491.35
  6. Step 6: Final answer
    x = 516,803.06

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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.