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Finding the Fourth Proportional to 652,308.66, 978,772.20 and 315,160.32

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Solution

The fourth proportional to 652,308.66, 978,772.20 and 315,160.32 is: 472,889.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,308.66 : 978,772.20 = 315,160.32 : x
  2. Step 2: Convert to fraction form
    652,308.66/978,772.20 = 315,160.32/x
  3. Step 3: Cross multiply
    652,308.66x = 978,772.20 × 315,160.32
  4. Step 4: Simplify right side
    652,308.66x = 308,470,159,759.10
  5. Step 5: Solve for x
    x = 308,470,159,759.10/652,308.66
  6. Step 6: Final answer
    x = 472,889.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.