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Finding the Fourth Proportional to 978,948.99, 1,468,248.30 and 622,905.39

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Solution

The fourth proportional to 978,948.99, 1,468,248.30 and 622,905.39 is: 934,246.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,948.99 : 1,468,248.30 = 622,905.39 : x
  2. Step 2: Convert to fraction form
    978,948.99/1,468,248.30 = 622,905.39/x
  3. Step 3: Cross multiply
    978,948.99x = 1,468,248.30 × 622,905.39
  4. Step 4: Simplify right side
    978,948.99x = 914,579,779,928.34
  5. Step 5: Solve for x
    x = 914,579,779,928.34/978,948.99
  6. Step 6: Final answer
    x = 934,246.61

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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.