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Finding the Fourth Proportional to 978,523.92, 1,349,789.52 and 615,371.76

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Solution

The fourth proportional to 978,523.92, 1,349,789.52 and 615,371.76 is: 848,852.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,523.92 : 1,349,789.52 = 615,371.76 : x
  2. Step 2: Convert to fraction form
    978,523.92/1,349,789.52 = 615,371.76/x
  3. Step 3: Cross multiply
    978,523.92x = 1,349,789.52 × 615,371.76
  4. Step 4: Simplify right side
    978,523.92x = 830,622,352,551.96
  5. Step 5: Solve for x
    x = 830,622,352,551.96/978,523.92
  6. Step 6: Final answer
    x = 848,852.37

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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.