Home / 771,208.60-1,156,121.70-687,227.80

Finding the Fourth Proportional to 771,208.60, 1,156,121.70 and 687,227.80

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Solution

The fourth proportional to 771,208.60, 1,156,121.70 and 687,227.80 is: 1,030,225.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,208.60 : 1,156,121.70 = 687,227.80 : x
  2. Step 2: Convert to fraction form
    771,208.60/1,156,121.70 = 687,227.80/x
  3. Step 3: Cross multiply
    771,208.60x = 1,156,121.70 × 687,227.80
  4. Step 4: Simplify right side
    771,208.60x = 794,518,972,423.26
  5. Step 5: Solve for x
    x = 794,518,972,423.26/771,208.60
  6. Step 6: Final answer
    x = 1,030,225.77

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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.