Home / 493,501.48-681,036.73-289,555.87

Finding the Fourth Proportional to 493,501.48, 681,036.73 and 289,555.87

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Solution

The fourth proportional to 493,501.48, 681,036.73 and 289,555.87 is: 399,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,501.48 : 681,036.73 = 289,555.87 : x
  2. Step 2: Convert to fraction form
    493,501.48/681,036.73 = 289,555.87/x
  3. Step 3: Cross multiply
    493,501.48x = 681,036.73 × 289,555.87
  4. Step 4: Simplify right side
    493,501.48x = 197,198,178,728.03
  5. Step 5: Solve for x
    x = 197,198,178,728.03/493,501.48
  6. Step 6: Final answer
    x = 399,589.85

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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.