Home / 1,121,911.83-1,681,867.40-411,775.11

Finding the Fourth Proportional to 1,121,911.83, 1,681,867.40 and 411,775.11

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Solution

The fourth proportional to 1,121,911.83, 1,681,867.40 and 411,775.11 is: 617,295.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,911.83 : 1,681,867.40 = 411,775.11 : x
  2. Step 2: Convert to fraction form
    1,121,911.83/1,681,867.40 = 411,775.11/x
  3. Step 3: Cross multiply
    1,121,911.83x = 1,681,867.40 × 411,775.11
  4. Step 4: Simplify right side
    1,121,911.83x = 692,551,131,581.54
  5. Step 5: Solve for x
    x = 692,551,131,581.54/1,121,911.83
  6. Step 6: Final answer
    x = 617,295.51

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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.