Home / 1,028,279.45-1,420,503.73-821,276.05

Finding the Fourth Proportional to 1,028,279.45, 1,420,503.73 and 821,276.05

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Solution

The fourth proportional to 1,028,279.45, 1,420,503.73 and 821,276.05 is: 1,134,541.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028,279.45 : 1,420,503.73 = 821,276.05 : x
  2. Step 2: Convert to fraction form
    1,028,279.45/1,420,503.73 = 821,276.05/x
  3. Step 3: Cross multiply
    1,028,279.45x = 1,420,503.73 × 821,276.05
  4. Step 4: Simplify right side
    1,028,279.45x = 1,166,625,692,384.67
  5. Step 5: Solve for x
    x = 1,166,625,692,384.67/1,028,279.45
  6. Step 6: Final answer
    x = 1,134,541.48

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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.