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Finding the Fourth Proportional to 721,409.08, 995,563.04 and 434,947.56

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Solution

The fourth proportional to 721,409.08, 995,563.04 and 434,947.56 is: 600,238.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,409.08 : 995,563.04 = 434,947.56 : x
  2. Step 2: Convert to fraction form
    721,409.08/995,563.04 = 434,947.56/x
  3. Step 3: Cross multiply
    721,409.08x = 995,563.04 × 434,947.56
  4. Step 4: Simplify right side
    721,409.08x = 433,017,715,074.18
  5. Step 5: Solve for x
    x = 433,017,715,074.18/721,409.08
  6. Step 6: Final answer
    x = 600,238.79

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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.