Home / 808,213.40-1,214,069.70-778,470.20

Finding the Fourth Proportional to 808,213.40, 1,214,069.70 and 778,470.20

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Solution

The fourth proportional to 808,213.40, 1,214,069.70 and 778,470.20 is: 1,169,390.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,213.40 : 1,214,069.70 = 778,470.20 : x
  2. Step 2: Convert to fraction form
    808,213.40/1,214,069.70 = 778,470.20/x
  3. Step 3: Cross multiply
    808,213.40x = 1,214,069.70 × 778,470.20
  4. Step 4: Simplify right side
    808,213.40x = 945,117,082,172.94
  5. Step 5: Solve for x
    x = 945,117,082,172.94/808,213.40
  6. Step 6: Final answer
    x = 1,169,390.51

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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.