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Finding the Fourth Proportional to 605,801.20, 908,701.80 and 290,095.60

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Solution

The fourth proportional to 605,801.20, 908,701.80 and 290,095.60 is: 435,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,801.20 : 908,701.80 = 290,095.60 : x
  2. Step 2: Convert to fraction form
    605,801.20/908,701.80 = 290,095.60/x
  3. Step 3: Cross multiply
    605,801.20x = 908,701.80 × 290,095.60
  4. Step 4: Simplify right side
    605,801.20x = 263,610,393,892.08
  5. Step 5: Solve for x
    x = 263,610,393,892.08/605,801.20
  6. Step 6: Final answer
    x = 435,143.40

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Similar ratio
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1.5x scale

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.