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Finding the Fourth Proportional to 490,345.55, 676,860.41 and 368,190.81

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Solution

The fourth proportional to 490,345.55, 676,860.41 and 368,190.81 is: 508,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,345.55 : 676,860.41 = 368,190.81 : x
  2. Step 2: Convert to fraction form
    490,345.55/676,860.41 = 368,190.81/x
  3. Step 3: Cross multiply
    490,345.55x = 676,860.41 × 368,190.81
  4. Step 4: Simplify right side
    490,345.55x = 249,213,782,614.83
  5. Step 5: Solve for x
    x = 249,213,782,614.83/490,345.55
  6. Step 6: Final answer
    x = 508,241.14

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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.