Home / 513,011.22-707,943.09-280,427.82

Finding the Fourth Proportional to 513,011.22, 707,943.09 and 280,427.82

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Solution

The fourth proportional to 513,011.22, 707,943.09 and 280,427.82 is: 386,983.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,011.22 : 707,943.09 = 280,427.82 : x
  2. Step 2: Convert to fraction form
    513,011.22/707,943.09 = 280,427.82/x
  3. Step 3: Cross multiply
    513,011.22x = 707,943.09 × 280,427.82
  4. Step 4: Simplify right side
    513,011.22x = 198,526,937,412.76
  5. Step 5: Solve for x
    x = 198,526,937,412.76/513,011.22
  6. Step 6: Final answer
    x = 386,983.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.