Home / 1,276,384.80-1,912,503.60-802,221.60

Finding the Fourth Proportional to 1,276,384.80, 1,912,503.60 and 802,221.60

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Solution

The fourth proportional to 1,276,384.80, 1,912,503.60 and 802,221.60 is: 1,202,029.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,384.80 : 1,912,503.60 = 802,221.60 : x
  2. Step 2: Convert to fraction form
    1,276,384.80/1,912,503.60 = 802,221.60/x
  3. Step 3: Cross multiply
    1,276,384.80x = 1,912,503.60 × 802,221.60
  4. Step 4: Simplify right side
    1,276,384.80x = 1,534,251,697,997.76
  5. Step 5: Solve for x
    x = 1,534,251,697,997.76/1,276,384.80
  6. Step 6: Final answer
    x = 1,202,029.12

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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.