Home / 1,221,515.90-1,685,693.95-677,651.69

Finding the Fourth Proportional to 1,221,515.90, 1,685,693.95 and 677,651.69

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Solution

The fourth proportional to 1,221,515.90, 1,685,693.95 and 677,651.69 is: 935,160.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,515.90 : 1,685,693.95 = 677,651.69 : x
  2. Step 2: Convert to fraction form
    1,221,515.90/1,685,693.95 = 677,651.69/x
  3. Step 3: Cross multiply
    1,221,515.90x = 1,685,693.95 × 677,651.69
  4. Step 4: Simplify right side
    1,221,515.90x = 1,142,313,354,040.28
  5. Step 5: Solve for x
    x = 1,142,313,354,040.28/1,221,515.90
  6. Step 6: Final answer
    x = 935,160.45

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1.5x scale

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.