Home / 1,160,263.56-1,601,138.80-643,987.28

Finding the Fourth Proportional to 1,160,263.56, 1,601,138.80 and 643,987.28

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Solution

The fourth proportional to 1,160,263.56, 1,601,138.80 and 643,987.28 is: 888,688.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160,263.56 : 1,601,138.80 = 643,987.28 : x
  2. Step 2: Convert to fraction form
    1,160,263.56/1,601,138.80 = 643,987.28/x
  3. Step 3: Cross multiply
    1,160,263.56x = 1,601,138.80 × 643,987.28
  4. Step 4: Simplify right side
    1,160,263.56x = 1,031,113,015,101.65
  5. Step 5: Solve for x
    x = 1,031,113,015,101.65/1,160,263.56
  6. Step 6: Final answer
    x = 888,688.61

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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.