Home / 415,921.40-623,882.10-384,428.60

Finding the Fourth Proportional to 415,921.40, 623,882.10 and 384,428.60

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Solution

The fourth proportional to 415,921.40, 623,882.10 and 384,428.60 is: 576,642.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,921.40 : 623,882.10 = 384,428.60 : x
  2. Step 2: Convert to fraction form
    415,921.40/623,882.10 = 384,428.60/x
  3. Step 3: Cross multiply
    415,921.40x = 623,882.10 × 384,428.60
  4. Step 4: Simplify right side
    415,921.40x = 239,838,122,268.06
  5. Step 5: Solve for x
    x = 239,838,122,268.06/415,921.40
  6. Step 6: Final answer
    x = 576,642.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.