Home / 1,289,410.70-1,779,314.32-772,906.14

Finding the Fourth Proportional to 1,289,410.70, 1,779,314.32 and 772,906.14

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Solution

The fourth proportional to 1,289,410.70, 1,779,314.32 and 772,906.14 is: 1,066,567.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,410.70 : 1,779,314.32 = 772,906.14 : x
  2. Step 2: Convert to fraction form
    1,289,410.70/1,779,314.32 = 772,906.14/x
  3. Step 3: Cross multiply
    1,289,410.70x = 1,779,314.32 × 772,906.14
  4. Step 4: Simplify right side
    1,289,410.70x = 1,375,242,962,917.92
  5. Step 5: Solve for x
    x = 1,375,242,962,917.92/1,289,410.70
  6. Step 6: Final answer
    x = 1,066,567.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.