Home / 1,397,378.40-2,094,685.20-686,824.80

Finding the Fourth Proportional to 1,397,378.40, 2,094,685.20 and 686,824.80

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Solution

The fourth proportional to 1,397,378.40, 2,094,685.20 and 686,824.80 is: 1,029,557.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,397,378.40 : 2,094,685.20 = 686,824.80 : x
  2. Step 2: Convert to fraction form
    1,397,378.40/2,094,685.20 = 686,824.80/x
  3. Step 3: Cross multiply
    1,397,378.40x = 2,094,685.20 × 686,824.80
  4. Step 4: Simplify right side
    1,397,378.40x = 1,438,681,743,552.96
  5. Step 5: Solve for x
    x = 1,438,681,743,552.96/1,397,378.40
  6. Step 6: Final answer
    x = 1,029,557.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.