Home / 724,984.80-1,087,477.20-305,080.80

Finding the Fourth Proportional to 724,984.80, 1,087,477.20 and 305,080.80

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Solution

The fourth proportional to 724,984.80, 1,087,477.20 and 305,080.80 is: 457,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,984.80 : 1,087,477.20 = 305,080.80 : x
  2. Step 2: Convert to fraction form
    724,984.80/1,087,477.20 = 305,080.80/x
  3. Step 3: Cross multiply
    724,984.80x = 1,087,477.20 × 305,080.80
  4. Step 4: Simplify right side
    724,984.80x = 331,768,414,157.76
  5. Step 5: Solve for x
    x = 331,768,414,157.76/724,984.80
  6. Step 6: Final answer
    x = 457,621.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.