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Finding the Fourth Proportional to 652,259.60, 978,389.40 and 279,011.60

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Solution

The fourth proportional to 652,259.60, 978,389.40 and 279,011.60 is: 418,517.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,259.60 : 978,389.40 = 279,011.60 : x
  2. Step 2: Convert to fraction form
    652,259.60/978,389.40 = 279,011.60/x
  3. Step 3: Cross multiply
    652,259.60x = 978,389.40 × 279,011.60
  4. Step 4: Simplify right side
    652,259.60x = 272,981,991,917.04
  5. Step 5: Solve for x
    x = 272,981,991,917.04/652,259.60
  6. Step 6: Final answer
    x = 418,517.40

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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.