Home / 1,221,148.80-1,685,286-677,459.60

Finding the Fourth Proportional to 1,221,148.80, 1,685,286 and 677,459.60

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Solution

The fourth proportional to 1,221,148.80, 1,685,286 and 677,459.60 is: 934,950.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,148.80 : 1,685,286 = 677,459.60 : x
  2. Step 2: Convert to fraction form
    1,221,148.80/1,685,286 = 677,459.60/x
  3. Step 3: Cross multiply
    1,221,148.80x = 1,685,286 × 677,459.60
  4. Step 4: Simplify right side
    1,221,148.80x = 1,141,713,179,445.60
  5. Step 5: Solve for x
    x = 1,141,713,179,445.60/1,221,148.80
  6. Step 6: Final answer
    x = 934,950.09

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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.