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Finding the Fourth Proportional to 490,410, 731,323.44 and 485,925.75

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Solution

The fourth proportional to 490,410, 731,323.44 and 485,925.75 is: 724,636.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,410 : 731,323.44 = 485,925.75 : x
  2. Step 2: Convert to fraction form
    490,410/731,323.44 = 485,925.75/x
  3. Step 3: Cross multiply
    490,410x = 731,323.44 × 485,925.75
  4. Step 4: Simplify right side
    490,410x = 355,368,891,074.58
  5. Step 5: Solve for x
    x = 355,368,891,074.58/490,410
  6. Step 6: Final answer
    x = 724,636.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.