Home / 448,815.12-619,419.69-257,828.10

Finding the Fourth Proportional to 448,815.12, 619,419.69 and 257,828.10

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Solution

The fourth proportional to 448,815.12, 619,419.69 and 257,828.10 is: 355,834.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,815.12 : 619,419.69 = 257,828.10 : x
  2. Step 2: Convert to fraction form
    448,815.12/619,419.69 = 257,828.10/x
  3. Step 3: Cross multiply
    448,815.12x = 619,419.69 × 257,828.10
  4. Step 4: Simplify right side
    448,815.12x = 159,703,801,775.29
  5. Step 5: Solve for x
    x = 159,703,801,775.29/448,815.12
  6. Step 6: Final answer
    x = 355,834.27

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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.