Home / 1,215,880.20-1,678,001.55-672,004.28

Finding the Fourth Proportional to 1,215,880.20, 1,678,001.55 and 672,004.28

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Solution

The fourth proportional to 1,215,880.20, 1,678,001.55 and 672,004.28 is: 927,413.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,880.20 : 1,678,001.55 = 672,004.28 : x
  2. Step 2: Convert to fraction form
    1,215,880.20/1,678,001.55 = 672,004.28/x
  3. Step 3: Cross multiply
    1,215,880.20x = 1,678,001.55 × 672,004.28
  4. Step 4: Simplify right side
    1,215,880.20x = 1,127,624,228,901.65
  5. Step 5: Solve for x
    x = 1,127,624,228,901.65/1,215,880.20
  6. Step 6: Final answer
    x = 927,413.93

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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.