Home / 612,741.90-844,990.11-408,801.12

Finding the Fourth Proportional to 612,741.90, 844,990.11 and 408,801.12

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Solution

The fourth proportional to 612,741.90, 844,990.11 and 408,801.12 is: 563,749.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,741.90 : 844,990.11 = 408,801.12 : x
  2. Step 2: Convert to fraction form
    612,741.90/844,990.11 = 408,801.12/x
  3. Step 3: Cross multiply
    612,741.90x = 844,990.11 × 408,801.12
  4. Step 4: Simplify right side
    612,741.90x = 345,432,903,356.92
  5. Step 5: Solve for x
    x = 345,432,903,356.92/612,741.90
  6. Step 6: Final answer
    x = 563,749.44

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.