Home / 1,221,388.80-1,685,526.66-677,560.20

Finding the Fourth Proportional to 1,221,388.80, 1,685,526.66 and 677,560.20

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Solution

The fourth proportional to 1,221,388.80, 1,685,526.66 and 677,560.20 is: 935,038.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,388.80 : 1,685,526.66 = 677,560.20 : x
  2. Step 2: Convert to fraction form
    1,221,388.80/1,685,526.66 = 677,560.20/x
  3. Step 3: Cross multiply
    1,221,388.80x = 1,685,526.66 × 677,560.20
  4. Step 4: Simplify right side
    1,221,388.80x = 1,142,045,780,854.93
  5. Step 5: Solve for x
    x = 1,142,045,780,854.93/1,221,388.80
  6. Step 6: Final answer
    x = 935,038.69

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Double scale
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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.