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Finding the Fourth Proportional to 978,749.80, 1,468,124.70 and 339,052.30

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Solution

The fourth proportional to 978,749.80, 1,468,124.70 and 339,052.30 is: 508,578.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,749.80 : 1,468,124.70 = 339,052.30 : x
  2. Step 2: Convert to fraction form
    978,749.80/1,468,124.70 = 339,052.30/x
  3. Step 3: Cross multiply
    978,749.80x = 1,468,124.70 × 339,052.30
  4. Step 4: Simplify right side
    978,749.80x = 497,771,056,221.81
  5. Step 5: Solve for x
    x = 497,771,056,221.81/978,749.80
  6. Step 6: Final answer
    x = 508,578.45

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Similar ratio
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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.