Home / 448,629.16-619,145.46-257,679.40

Finding the Fourth Proportional to 448,629.16, 619,145.46 and 257,679.40

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Solution

The fourth proportional to 448,629.16, 619,145.46 and 257,679.40 is: 355,618.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,629.16 : 619,145.46 = 257,679.40 : x
  2. Step 2: Convert to fraction form
    448,629.16/619,145.46 = 257,679.40/x
  3. Step 3: Cross multiply
    448,629.16x = 619,145.46 × 257,679.40
  4. Step 4: Simplify right side
    448,629.16x = 159,541,030,645.52
  5. Step 5: Solve for x
    x = 159,541,030,645.52/448,629.16
  6. Step 6: Final answer
    x = 355,618.95

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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.