Home / 520,721.76-781,099.89-179,161.89

Finding the Fourth Proportional to 520,721.76, 781,099.89 and 179,161.89

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Solution

The fourth proportional to 520,721.76, 781,099.89 and 179,161.89 is: 268,748.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,721.76 : 781,099.89 = 179,161.89 : x
  2. Step 2: Convert to fraction form
    520,721.76/781,099.89 = 179,161.89/x
  3. Step 3: Cross multiply
    520,721.76x = 781,099.89 × 179,161.89
  4. Step 4: Simplify right side
    520,721.76x = 139,943,334,371.68
  5. Step 5: Solve for x
    x = 139,943,334,371.68/520,721.76
  6. Step 6: Final answer
    x = 268,748.77

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1.5x scale

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.