Home / 877,823.80-1,211,564.78-515,327.80

Finding the Fourth Proportional to 877,823.80, 1,211,564.78 and 515,327.80

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Solution

The fourth proportional to 877,823.80, 1,211,564.78 and 515,327.80 is: 711,250.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,823.80 : 1,211,564.78 = 515,327.80 : x
  2. Step 2: Convert to fraction form
    877,823.80/1,211,564.78 = 515,327.80/x
  3. Step 3: Cross multiply
    877,823.80x = 1,211,564.78 × 515,327.80
  4. Step 4: Simplify right side
    877,823.80x = 624,353,012,634.88
  5. Step 5: Solve for x
    x = 624,353,012,634.88/877,823.80
  6. Step 6: Final answer
    x = 711,250.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.