Home / 1,221,282.90-1,685,364.99-697,984.78

Finding the Fourth Proportional to 1,221,282.90, 1,685,364.99 and 697,984.78

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Solution

The fourth proportional to 1,221,282.90, 1,685,364.99 and 697,984.78 is: 963,215.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,282.90 : 1,685,364.99 = 697,984.78 : x
  2. Step 2: Convert to fraction form
    1,221,282.90/1,685,364.99 = 697,984.78/x
  3. Step 3: Cross multiply
    1,221,282.90x = 1,685,364.99 × 697,984.78
  4. Step 4: Simplify right side
    1,221,282.90x = 1,176,359,112,020.22
  5. Step 5: Solve for x
    x = 1,176,359,112,020.22/1,221,282.90
  6. Step 6: Final answer
    x = 963,215.90

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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.