Home / 424,789.87-637,205.81-121,228.77

Finding the Fourth Proportional to 424,789.87, 637,205.81 and 121,228.77

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Solution

The fourth proportional to 424,789.87, 637,205.81 and 121,228.77 is: 181,849.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,789.87 : 637,205.81 = 121,228.77 : x
  2. Step 2: Convert to fraction form
    424,789.87/637,205.81 = 121,228.77/x
  3. Step 3: Cross multiply
    424,789.87x = 637,205.81 × 121,228.77
  4. Step 4: Simplify right side
    424,789.87x = 77,247,676,583.15
  5. Step 5: Solve for x
    x = 77,247,676,583.15/424,789.87
  6. Step 6: Final answer
    x = 181,849.15

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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.