Home / 386,419.60-579,629.40-268,224.40

Finding the Fourth Proportional to 386,419.60, 579,629.40 and 268,224.40

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Solution

The fourth proportional to 386,419.60, 579,629.40 and 268,224.40 is: 402,336.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,419.60 : 579,629.40 = 268,224.40 : x
  2. Step 2: Convert to fraction form
    386,419.60/579,629.40 = 268,224.40/x
  3. Step 3: Cross multiply
    386,419.60x = 579,629.40 × 268,224.40
  4. Step 4: Simplify right side
    386,419.60x = 155,470,748,037.36
  5. Step 5: Solve for x
    x = 155,470,748,037.36/386,419.60
  6. Step 6: Final answer
    x = 402,336.60

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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.