Home / 393,799.68-543,509.19-298,140.30

Finding the Fourth Proportional to 393,799.68, 543,509.19 and 298,140.30

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Solution

The fourth proportional to 393,799.68, 543,509.19 and 298,140.30 is: 411,483.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,799.68 : 543,509.19 = 298,140.30 : x
  2. Step 2: Convert to fraction form
    393,799.68/543,509.19 = 298,140.30/x
  3. Step 3: Cross multiply
    393,799.68x = 543,509.19 × 298,140.30
  4. Step 4: Simplify right side
    393,799.68x = 162,041,992,959.36
  5. Step 5: Solve for x
    x = 162,041,992,959.36/393,799.68
  6. Step 6: Final answer
    x = 411,483.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.