Home / 1,386,173.20-2,079,421.80-439,639.60

Finding the Fourth Proportional to 1,386,173.20, 2,079,421.80 and 439,639.60

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Solution

The fourth proportional to 1,386,173.20, 2,079,421.80 and 439,639.60 is: 659,510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,173.20 : 2,079,421.80 = 439,639.60 : x
  2. Step 2: Convert to fraction form
    1,386,173.20/2,079,421.80 = 439,639.60/x
  3. Step 3: Cross multiply
    1,386,173.20x = 2,079,421.80 × 439,639.60
  4. Step 4: Simplify right side
    1,386,173.20x = 914,196,168,383.28
  5. Step 5: Solve for x
    x = 914,196,168,383.28/1,386,173.20
  6. Step 6: Final answer
    x = 659,510.78

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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.