Home / 420,488.70-580,461.03-284,719.74

Finding the Fourth Proportional to 420,488.70, 580,461.03 and 284,719.74

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Solution

The fourth proportional to 420,488.70, 580,461.03 and 284,719.74 is: 393,039.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,488.70 : 580,461.03 = 284,719.74 : x
  2. Step 2: Convert to fraction form
    420,488.70/580,461.03 = 284,719.74/x
  3. Step 3: Cross multiply
    420,488.70x = 580,461.03 × 284,719.74
  4. Step 4: Simplify right side
    420,488.70x = 165,268,713,541.73
  5. Step 5: Solve for x
    x = 165,268,713,541.73/420,488.70
  6. Step 6: Final answer
    x = 393,039.61

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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.