Home / 1,293,123.80-1,784,566.20-720,164

Finding the Fourth Proportional to 1,293,123.80, 1,784,566.20 and 720,164

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Solution

The fourth proportional to 1,293,123.80, 1,784,566.20 and 720,164 is: 993,857.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293,123.80 : 1,784,566.20 = 720,164 : x
  2. Step 2: Convert to fraction form
    1,293,123.80/1,784,566.20 = 720,164/x
  3. Step 3: Cross multiply
    1,293,123.80x = 1,784,566.20 × 720,164
  4. Step 4: Simplify right side
    1,293,123.80x = 1,285,180,332,856.80
  5. Step 5: Solve for x
    x = 1,285,180,332,856.80/1,293,123.80
  6. Step 6: Final answer
    x = 993,857.15

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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.