Home / 908,143.10-1,362,214.65-308,905.10

Finding the Fourth Proportional to 908,143.10, 1,362,214.65 and 308,905.10

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Solution

The fourth proportional to 908,143.10, 1,362,214.65 and 308,905.10 is: 463,357.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,143.10 : 1,362,214.65 = 308,905.10 : x
  2. Step 2: Convert to fraction form
    908,143.10/1,362,214.65 = 308,905.10/x
  3. Step 3: Cross multiply
    908,143.10x = 1,362,214.65 × 308,905.10
  4. Step 4: Simplify right side
    908,143.10x = 420,795,052,679.72
  5. Step 5: Solve for x
    x = 420,795,052,679.72/908,143.10
  6. Step 6: Final answer
    x = 463,357.65

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Double scale
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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.