Home / 942,540.32-1,413,275.16-643,383.20

Finding the Fourth Proportional to 942,540.32, 1,413,275.16 and 643,383.20

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Solution

The fourth proportional to 942,540.32, 1,413,275.16 and 643,383.20 is: 964,709.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    942,540.32 : 1,413,275.16 = 643,383.20 : x
  2. Step 2: Convert to fraction form
    942,540.32/1,413,275.16 = 643,383.20/x
  3. Step 3: Cross multiply
    942,540.32x = 1,413,275.16 × 643,383.20
  4. Step 4: Simplify right side
    942,540.32x = 909,277,494,921.31
  5. Step 5: Solve for x
    x = 909,277,494,921.31/942,540.32
  6. Step 6: Final answer
    x = 964,709.39

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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.