Home / 1,295,200.40-1,942,800.60-408,621.20

Finding the Fourth Proportional to 1,295,200.40, 1,942,800.60 and 408,621.20

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Solution

The fourth proportional to 1,295,200.40, 1,942,800.60 and 408,621.20 is: 612,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,200.40 : 1,942,800.60 = 408,621.20 : x
  2. Step 2: Convert to fraction form
    1,295,200.40/1,942,800.60 = 408,621.20/x
  3. Step 3: Cross multiply
    1,295,200.40x = 1,942,800.60 × 408,621.20
  4. Step 4: Simplify right side
    1,295,200.40x = 793,869,512,532.72
  5. Step 5: Solve for x
    x = 793,869,512,532.72/1,295,200.40
  6. Step 6: Final answer
    x = 612,931.80

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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.