Home / 986,629.76-1,479,345.36-386,872.40

Finding the Fourth Proportional to 986,629.76, 1,479,345.36 and 386,872.40

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Solution

The fourth proportional to 986,629.76, 1,479,345.36 and 386,872.40 is: 580,073.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,629.76 : 1,479,345.36 = 386,872.40 : x
  2. Step 2: Convert to fraction form
    986,629.76/1,479,345.36 = 386,872.40/x
  3. Step 3: Cross multiply
    986,629.76x = 1,479,345.36 × 386,872.40
  4. Step 4: Simplify right side
    986,629.76x = 572,317,889,852.06
  5. Step 5: Solve for x
    x = 572,317,889,852.06/986,629.76
  6. Step 6: Final answer
    x = 580,073.61

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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.