Home / 431,981.36-647,898.20-116,364.45

Finding the Fourth Proportional to 431,981.36, 647,898.20 and 116,364.45

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Solution

The fourth proportional to 431,981.36, 647,898.20 and 116,364.45 is: 174,526.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,981.36 : 647,898.20 = 116,364.45 : x
  2. Step 2: Convert to fraction form
    431,981.36/647,898.20 = 116,364.45/x
  3. Step 3: Cross multiply
    431,981.36x = 647,898.20 × 116,364.45
  4. Step 4: Simplify right side
    431,981.36x = 75,392,317,117.17
  5. Step 5: Solve for x
    x = 75,392,317,117.17/431,981.36
  6. Step 6: Final answer
    x = 174,526.79

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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.