Home / 493,724.70-681,303.15-278,864.10

Finding the Fourth Proportional to 493,724.70, 681,303.15 and 278,864.10

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Solution

The fourth proportional to 493,724.70, 681,303.15 and 278,864.10 is: 384,811.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,724.70 : 681,303.15 = 278,864.10 : x
  2. Step 2: Convert to fraction form
    493,724.70/681,303.15 = 278,864.10/x
  3. Step 3: Cross multiply
    493,724.70x = 681,303.15 × 278,864.10
  4. Step 4: Simplify right side
    493,724.70x = 189,990,989,751.92
  5. Step 5: Solve for x
    x = 189,990,989,751.92/493,724.70
  6. Step 6: Final answer
    x = 384,811.60

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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.