Home / 805,187.65-1,111,172.76-442,626.79

Finding the Fourth Proportional to 805,187.65, 1,111,172.76 and 442,626.79

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Solution

The fourth proportional to 805,187.65, 1,111,172.76 and 442,626.79 is: 610,832.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,187.65 : 1,111,172.76 = 442,626.79 : x
  2. Step 2: Convert to fraction form
    805,187.65/1,111,172.76 = 442,626.79/x
  3. Step 3: Cross multiply
    805,187.65x = 1,111,172.76 × 442,626.79
  4. Step 4: Simplify right side
    805,187.65x = 491,834,831,894.24
  5. Step 5: Solve for x
    x = 491,834,831,894.24/805,187.65
  6. Step 6: Final answer
    x = 610,832.56

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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.