Home / 1,215,890.52-1,678,015.74-672,014.62

Finding the Fourth Proportional to 1,215,890.52, 1,678,015.74 and 672,014.62

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Solution

The fourth proportional to 1,215,890.52, 1,678,015.74 and 672,014.62 is: 927,428.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,890.52 : 1,678,015.74 = 672,014.62 : x
  2. Step 2: Convert to fraction form
    1,215,890.52/1,678,015.74 = 672,014.62/x
  3. Step 3: Cross multiply
    1,215,890.52x = 1,678,015.74 × 672,014.62
  4. Step 4: Simplify right side
    1,215,890.52x = 1,127,651,109,870.12
  5. Step 5: Solve for x
    x = 1,127,651,109,870.12/1,215,890.52
  6. Step 6: Final answer
    x = 927,428.16

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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.