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Finding the Fourth Proportional to 583,992.25, 805,910.39 and 315,720.25

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Solution

The fourth proportional to 583,992.25, 805,910.39 and 315,720.25 is: 435,694.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,992.25 : 805,910.39 = 315,720.25 : x
  2. Step 2: Convert to fraction form
    583,992.25/805,910.39 = 315,720.25/x
  3. Step 3: Cross multiply
    583,992.25x = 805,910.39 × 315,720.25
  4. Step 4: Simplify right side
    583,992.25x = 254,442,229,808.40
  5. Step 5: Solve for x
    x = 254,442,229,808.40/583,992.25
  6. Step 6: Final answer
    x = 435,694.53

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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.