Home / 1,315,834.32-1,972,161-640,904.28

Finding the Fourth Proportional to 1,315,834.32, 1,972,161 and 640,904.28

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Solution

The fourth proportional to 1,315,834.32, 1,972,161 and 640,904.28 is: 960,581.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,834.32 : 1,972,161 = 640,904.28 : x
  2. Step 2: Convert to fraction form
    1,315,834.32/1,972,161 = 640,904.28/x
  3. Step 3: Cross multiply
    1,315,834.32x = 1,972,161 × 640,904.28
  4. Step 4: Simplify right side
    1,315,834.32x = 1,263,966,425,749.08
  5. Step 5: Solve for x
    x = 1,263,966,425,749.08/1,315,834.32
  6. Step 6: Final answer
    x = 960,581.74

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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.