Home / 1,678,990.60-2,517,742.86-480,639.88

Finding the Fourth Proportional to 1,678,990.60, 2,517,742.86 and 480,639.88

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Solution

The fourth proportional to 1,678,990.60, 2,517,742.86 and 480,639.88 is: 720,747.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,990.60 : 2,517,742.86 = 480,639.88 : x
  2. Step 2: Convert to fraction form
    1,678,990.60/2,517,742.86 = 480,639.88/x
  3. Step 3: Cross multiply
    1,678,990.60x = 2,517,742.86 × 480,639.88
  4. Step 4: Simplify right side
    1,678,990.60x = 1,210,127,626,101.26
  5. Step 5: Solve for x
    x = 1,210,127,626,101.26/1,678,990.60
  6. Step 6: Final answer
    x = 720,747.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.