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Finding the Fourth Proportional to 680,014.79, 938,390.83 and 374,071.78

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Solution

The fourth proportional to 680,014.79, 938,390.83 and 374,071.78 is: 516,202.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,014.79 : 938,390.83 = 374,071.78 : x
  2. Step 2: Convert to fraction form
    680,014.79/938,390.83 = 374,071.78/x
  3. Step 3: Cross multiply
    680,014.79x = 938,390.83 × 374,071.78
  4. Step 4: Simplify right side
    680,014.79x = 351,025,521,551.46
  5. Step 5: Solve for x
    x = 351,025,521,551.46/680,014.79
  6. Step 6: Final answer
    x = 516,202.77

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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.