Home / 579,384.56-869,159.68-219,458.40

Finding the Fourth Proportional to 579,384.56, 869,159.68 and 219,458.40

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Solution

The fourth proportional to 579,384.56, 869,159.68 and 219,458.40 is: 329,218.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,384.56 : 869,159.68 = 219,458.40 : x
  2. Step 2: Convert to fraction form
    579,384.56/869,159.68 = 219,458.40/x
  3. Step 3: Cross multiply
    579,384.56x = 869,159.68 × 219,458.40
  4. Step 4: Simplify right side
    579,384.56x = 190,744,392,717.31
  5. Step 5: Solve for x
    x = 190,744,392,717.31/579,384.56
  6. Step 6: Final answer
    x = 329,218.98

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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.