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Finding the Fourth Proportional to 579,270.40, 869,164.80 and 263,564.80

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Solution

The fourth proportional to 579,270.40, 869,164.80 and 263,564.80 is: 395,465.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,270.40 : 869,164.80 = 263,564.80 : x
  2. Step 2: Convert to fraction form
    579,270.40/869,164.80 = 263,564.80/x
  3. Step 3: Cross multiply
    579,270.40x = 869,164.80 × 263,564.80
  4. Step 4: Simplify right side
    579,270.40x = 229,081,246,679.04
  5. Step 5: Solve for x
    x = 229,081,246,679.04/579,270.40
  6. Step 6: Final answer
    x = 395,465.13

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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.