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Finding the Fourth Proportional to 673,888.64, 1,010,978.76 and 200,612.12

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Solution

The fourth proportional to 673,888.64, 1,010,978.76 and 200,612.12 is: 300,961.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,888.64 : 1,010,978.76 = 200,612.12 : x
  2. Step 2: Convert to fraction form
    673,888.64/1,010,978.76 = 200,612.12/x
  3. Step 3: Cross multiply
    673,888.64x = 1,010,978.76 × 200,612.12
  4. Step 4: Simplify right side
    673,888.64x = 202,814,592,318.57
  5. Step 5: Solve for x
    x = 202,814,592,318.57/673,888.64
  6. Step 6: Final answer
    x = 300,961.58

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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.