Home / 1,378,722.90-2,068,139.99-480,255.51

Finding the Fourth Proportional to 1,378,722.90, 2,068,139.99 and 480,255.51

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Solution

The fourth proportional to 1,378,722.90, 2,068,139.99 and 480,255.51 is: 720,402.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,722.90 : 2,068,139.99 = 480,255.51 : x
  2. Step 2: Convert to fraction form
    1,378,722.90/2,068,139.99 = 480,255.51/x
  3. Step 3: Cross multiply
    1,378,722.90x = 2,068,139.99 × 480,255.51
  4. Step 4: Simplify right side
    1,378,722.90x = 993,235,634,605.01
  5. Step 5: Solve for x
    x = 993,235,634,605.01/1,378,722.90
  6. Step 6: Final answer
    x = 720,402.65

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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.