Home / 494,068.58-681,820-290,121.92

Finding the Fourth Proportional to 494,068.58, 681,820 and 290,121.92

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Solution

The fourth proportional to 494,068.58, 681,820 and 290,121.92 is: 400,371.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,068.58 : 681,820 = 290,121.92 : x
  2. Step 2: Convert to fraction form
    494,068.58/681,820 = 290,121.92/x
  3. Step 3: Cross multiply
    494,068.58x = 681,820 × 290,121.92
  4. Step 4: Simplify right side
    494,068.58x = 197,810,927,494.40
  5. Step 5: Solve for x
    x = 197,810,927,494.40/494,068.58
  6. Step 6: Final answer
    x = 400,371.40

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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.