Home / 805,928.55-1,112,158.24-438,394.11

Finding the Fourth Proportional to 805,928.55, 1,112,158.24 and 438,394.11

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Solution

The fourth proportional to 805,928.55, 1,112,158.24 and 438,394.11 is: 604,971.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,928.55 : 1,112,158.24 = 438,394.11 : x
  2. Step 2: Convert to fraction form
    805,928.55/1,112,158.24 = 438,394.11/x
  3. Step 3: Cross multiply
    805,928.55x = 1,112,158.24 × 438,394.11
  4. Step 4: Simplify right side
    805,928.55x = 487,563,621,803.97
  5. Step 5: Solve for x
    x = 487,563,621,803.97/805,928.55
  6. Step 6: Final answer
    x = 604,971.27

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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.