Home / 619,434.04-855,185.40-390,187.84

Finding the Fourth Proportional to 619,434.04, 855,185.40 and 390,187.84

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Solution

The fourth proportional to 619,434.04, 855,185.40 and 390,187.84 is: 538,690.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,434.04 : 855,185.40 = 390,187.84 : x
  2. Step 2: Convert to fraction form
    619,434.04/855,185.40 = 390,187.84/x
  3. Step 3: Cross multiply
    619,434.04x = 855,185.40 × 390,187.84
  4. Step 4: Simplify right side
    619,434.04x = 333,682,944,025.54
  5. Step 5: Solve for x
    x = 333,682,944,025.54/619,434.04
  6. Step 6: Final answer
    x = 538,690.03

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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.