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Finding the Fourth Proportional to 492,405.04, 738,607.76 and 380,249.20

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Solution

The fourth proportional to 492,405.04, 738,607.76 and 380,249.20 is: 570,373.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,405.04 : 738,607.76 = 380,249.20 : x
  2. Step 2: Convert to fraction form
    492,405.04/738,607.76 = 380,249.20/x
  3. Step 3: Cross multiply
    492,405.04x = 738,607.76 × 380,249.20
  4. Step 4: Simplify right side
    492,405.04x = 280,855,004,259.51
  5. Step 5: Solve for x
    x = 280,855,004,259.51/492,405.04
  6. Step 6: Final answer
    x = 570,373.95

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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.