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Finding the Fourth Proportional to 605,717.20, 908,575.80 and 290,011.60

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Solution

The fourth proportional to 605,717.20, 908,575.80 and 290,011.60 is: 435,017.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,717.20 : 908,575.80 = 290,011.60 : x
  2. Step 2: Convert to fraction form
    605,717.20/908,575.80 = 290,011.60/x
  3. Step 3: Cross multiply
    605,717.20x = 908,575.80 × 290,011.60
  4. Step 4: Simplify right side
    605,717.20x = 263,497,521,479.28
  5. Step 5: Solve for x
    x = 263,497,521,479.28/605,717.20
  6. Step 6: Final answer
    x = 435,017.40

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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.