Home / 811,573.60-1,217,068.80-412,081.60

Finding the Fourth Proportional to 811,573.60, 1,217,068.80 and 412,081.60

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Solution

The fourth proportional to 811,573.60, 1,217,068.80 and 412,081.60 is: 617,974.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,573.60 : 1,217,068.80 = 412,081.60 : x
  2. Step 2: Convert to fraction form
    811,573.60/1,217,068.80 = 412,081.60/x
  3. Step 3: Cross multiply
    811,573.60x = 1,217,068.80 × 412,081.60
  4. Step 4: Simplify right side
    811,573.60x = 501,531,658,414.08
  5. Step 5: Solve for x
    x = 501,531,658,414.08/811,573.60
  6. Step 6: Final answer
    x = 617,974.34

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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.