Home / 858,985.20-1,288,477.80-784,189.80

Finding the Fourth Proportional to 858,985.20, 1,288,477.80 and 784,189.80

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Solution

The fourth proportional to 858,985.20, 1,288,477.80 and 784,189.80 is: 1,176,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,985.20 : 1,288,477.80 = 784,189.80 : x
  2. Step 2: Convert to fraction form
    858,985.20/1,288,477.80 = 784,189.80/x
  3. Step 3: Cross multiply
    858,985.20x = 1,288,477.80 × 784,189.80
  4. Step 4: Simplify right side
    858,985.20x = 1,010,411,148,286.44
  5. Step 5: Solve for x
    x = 1,010,411,148,286.44/858,985.20
  6. Step 6: Final answer
    x = 1,176,284.70

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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.