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Finding the Fourth Proportional to 680,475.64, 939,048.94 and 374,545.46

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Solution

The fourth proportional to 680,475.64, 939,048.94 and 374,545.46 is: 516,868.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,475.64 : 939,048.94 = 374,545.46 : x
  2. Step 2: Convert to fraction form
    680,475.64/939,048.94 = 374,545.46/x
  3. Step 3: Cross multiply
    680,475.64x = 939,048.94 × 374,545.46
  4. Step 4: Simplify right side
    680,475.64x = 351,716,517,194.81
  5. Step 5: Solve for x
    x = 351,716,517,194.81/680,475.64
  6. Step 6: Final answer
    x = 516,868.64

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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.