Home / 619,428.03-855,177.12-390,181.83

Finding the Fourth Proportional to 619,428.03, 855,177.12 and 390,181.83

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Solution

The fourth proportional to 619,428.03, 855,177.12 and 390,181.83 is: 538,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,428.03 : 855,177.12 = 390,181.83 : x
  2. Step 2: Convert to fraction form
    619,428.03/855,177.12 = 390,181.83/x
  3. Step 3: Cross multiply
    619,428.03x = 855,177.12 × 390,181.83
  4. Step 4: Simplify right side
    619,428.03x = 333,674,573,655.73
  5. Step 5: Solve for x
    x = 333,674,573,655.73/619,428.03
  6. Step 6: Final answer
    x = 538,681.75

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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.