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Finding the Fourth Proportional to 556,338.87, 832,440.38 and 331,821.45

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Solution

The fourth proportional to 556,338.87, 832,440.38 and 331,821.45 is: 496,498.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,338.87 : 832,440.38 = 331,821.45 : x
  2. Step 2: Convert to fraction form
    556,338.87/832,440.38 = 331,821.45/x
  3. Step 3: Cross multiply
    556,338.87x = 832,440.38 × 331,821.45
  4. Step 4: Simplify right side
    556,338.87x = 276,221,572,271.04
  5. Step 5: Solve for x
    x = 276,221,572,271.04/556,338.87
  6. Step 6: Final answer
    x = 496,498.78

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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.