Home / 1,221,047.04-1,685,145.78-677,358.12

Finding the Fourth Proportional to 1,221,047.04, 1,685,145.78 and 677,358.12

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Solution

The fourth proportional to 1,221,047.04, 1,685,145.78 and 677,358.12 is: 934,810.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,047.04 : 1,685,145.78 = 677,358.12 : x
  2. Step 2: Convert to fraction form
    1,221,047.04/1,685,145.78 = 677,358.12/x
  3. Step 3: Cross multiply
    1,221,047.04x = 1,685,145.78 × 677,358.12
  4. Step 4: Simplify right side
    1,221,047.04x = 1,141,447,177,466.73
  5. Step 5: Solve for x
    x = 1,141,447,177,466.73/1,221,047.04
  6. Step 6: Final answer
    x = 934,810.16

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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.