Home / 1,320,497.11-1,980,876.93-479,114.47

Finding the Fourth Proportional to 1,320,497.11, 1,980,876.93 and 479,114.47

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Solution

The fourth proportional to 1,320,497.11, 1,980,876.93 and 479,114.47 is: 718,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,497.11 : 1,980,876.93 = 479,114.47 : x
  2. Step 2: Convert to fraction form
    1,320,497.11/1,980,876.93 = 479,114.47/x
  3. Step 3: Cross multiply
    1,320,497.11x = 1,980,876.93 × 479,114.47
  4. Step 4: Simplify right side
    1,320,497.11x = 949,066,800,452.18
  5. Step 5: Solve for x
    x = 949,066,800,452.18/1,320,497.11
  6. Step 6: Final answer
    x = 718,719.33

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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.