Home / 1,320,508.86-1,980,894.51-479,126.22

Finding the Fourth Proportional to 1,320,508.86, 1,980,894.51 and 479,126.22

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Solution

The fourth proportional to 1,320,508.86, 1,980,894.51 and 479,126.22 is: 718,736.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,508.86 : 1,980,894.51 = 479,126.22 : x
  2. Step 2: Convert to fraction form
    1,320,508.86/1,980,894.51 = 479,126.22/x
  3. Step 3: Cross multiply
    1,320,508.86x = 1,980,894.51 × 479,126.22
  4. Step 4: Simplify right side
    1,320,508.86x = 949,098,498,795.05
  5. Step 5: Solve for x
    x = 949,098,498,795.05/1,320,508.86
  6. Step 6: Final answer
    x = 718,736.94

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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.