Home / 1,207,186.80-1,808,015.40-615,519.60

Finding the Fourth Proportional to 1,207,186.80, 1,808,015.40 and 615,519.60

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Solution

The fourth proportional to 1,207,186.80, 1,808,015.40 and 615,519.60 is: 921,869.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,186.80 : 1,808,015.40 = 615,519.60 : x
  2. Step 2: Convert to fraction form
    1,207,186.80/1,808,015.40 = 615,519.60/x
  3. Step 3: Cross multiply
    1,207,186.80x = 1,808,015.40 × 615,519.60
  4. Step 4: Simplify right side
    1,207,186.80x = 1,112,868,915,801.84
  5. Step 5: Solve for x
    x = 1,112,868,915,801.84/1,207,186.80
  6. Step 6: Final answer
    x = 921,869.69

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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.