Home / 1,239,582.42-1,860,370.19-640,719.06

Finding the Fourth Proportional to 1,239,582.42, 1,860,370.19 and 640,719.06

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Solution

The fourth proportional to 1,239,582.42, 1,860,370.19 and 640,719.06 is: 961,593.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,582.42 : 1,860,370.19 = 640,719.06 : x
  2. Step 2: Convert to fraction form
    1,239,582.42/1,860,370.19 = 640,719.06/x
  3. Step 3: Cross multiply
    1,239,582.42x = 1,860,370.19 × 640,719.06
  4. Step 4: Simplify right side
    1,239,582.42x = 1,191,974,639,388.82
  5. Step 5: Solve for x
    x = 1,191,974,639,388.82/1,239,582.42
  6. Step 6: Final answer
    x = 961,593.69

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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.