Home / 811,979.60-1,217,854.20-251,070.80

Finding the Fourth Proportional to 811,979.60, 1,217,854.20 and 251,070.80

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Solution

The fourth proportional to 811,979.60, 1,217,854.20 and 251,070.80 is: 376,570.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,979.60 : 1,217,854.20 = 251,070.80 : x
  2. Step 2: Convert to fraction form
    811,979.60/1,217,854.20 = 251,070.80/x
  3. Step 3: Cross multiply
    811,979.60x = 1,217,854.20 × 251,070.80
  4. Step 4: Simplify right side
    811,979.60x = 305,767,628,277.36
  5. Step 5: Solve for x
    x = 305,767,628,277.36/811,979.60
  6. Step 6: Final answer
    x = 376,570.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.