Home / 858,700.20-1,288,050.30-783,904.80

Finding the Fourth Proportional to 858,700.20, 1,288,050.30 and 783,904.80

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Solution

The fourth proportional to 858,700.20, 1,288,050.30 and 783,904.80 is: 1,175,857.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,700.20 : 1,288,050.30 = 783,904.80 : x
  2. Step 2: Convert to fraction form
    858,700.20/1,288,050.30 = 783,904.80/x
  3. Step 3: Cross multiply
    858,700.20x = 1,288,050.30 × 783,904.80
  4. Step 4: Simplify right side
    858,700.20x = 1,009,708,812,811.44
  5. Step 5: Solve for x
    x = 1,009,708,812,811.44/858,700.20
  6. Step 6: Final answer
    x = 1,175,857.20

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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.