Home / 859,784.80-1,289,677.20-771,211.30

Finding the Fourth Proportional to 859,784.80, 1,289,677.20 and 771,211.30

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Solution

The fourth proportional to 859,784.80, 1,289,677.20 and 771,211.30 is: 1,156,816.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,784.80 : 1,289,677.20 = 771,211.30 : x
  2. Step 2: Convert to fraction form
    859,784.80/1,289,677.20 = 771,211.30/x
  3. Step 3: Cross multiply
    859,784.80x = 1,289,677.20 × 771,211.30
  4. Step 4: Simplify right side
    859,784.80x = 994,613,629,992.36
  5. Step 5: Solve for x
    x = 994,613,629,992.36/859,784.80
  6. Step 6: Final answer
    x = 1,156,816.95

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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.