Home / 756,911.20-1,133,811.60-520,520.80

Finding the Fourth Proportional to 756,911.20, 1,133,811.60 and 520,520.80

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Solution

The fourth proportional to 756,911.20, 1,133,811.60 and 520,520.80 is: 779,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,911.20 : 1,133,811.60 = 520,520.80 : x
  2. Step 2: Convert to fraction form
    756,911.20/1,133,811.60 = 520,520.80/x
  3. Step 3: Cross multiply
    756,911.20x = 1,133,811.60 × 520,520.80
  4. Step 4: Simplify right side
    756,911.20x = 590,172,521,081.28
  5. Step 5: Solve for x
    x = 590,172,521,081.28/756,911.20
  6. Step 6: Final answer
    x = 779,711.70

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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.