Home / 493,345.20-680,816.36-266,990.70

Finding the Fourth Proportional to 493,345.20, 680,816.36 and 266,990.70

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Solution

The fourth proportional to 493,345.20, 680,816.36 and 266,990.70 is: 368,447.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,345.20 : 680,816.36 = 266,990.70 : x
  2. Step 2: Convert to fraction form
    493,345.20/680,816.36 = 266,990.70/x
  3. Step 3: Cross multiply
    493,345.20x = 680,816.36 × 266,990.70
  4. Step 4: Simplify right side
    493,345.20x = 181,771,636,527.85
  5. Step 5: Solve for x
    x = 181,771,636,527.85/493,345.20
  6. Step 6: Final answer
    x = 368,447.16

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1.5x scale

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.