Home / 1,315,835.32-1,972,162.50-640,905.28

Finding the Fourth Proportional to 1,315,835.32, 1,972,162.50 and 640,905.28

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Solution

The fourth proportional to 1,315,835.32, 1,972,162.50 and 640,905.28 is: 960,583.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,835.32 : 1,972,162.50 = 640,905.28 : x
  2. Step 2: Convert to fraction form
    1,315,835.32/1,972,162.50 = 640,905.28/x
  3. Step 3: Cross multiply
    1,315,835.32x = 1,972,162.50 × 640,905.28
  4. Step 4: Simplify right side
    1,315,835.32x = 1,263,969,359,268
  5. Step 5: Solve for x
    x = 1,263,969,359,268/1,315,835.32
  6. Step 6: Final answer
    x = 960,583.24

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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.