Home / 619,450.60-928,979.08-421,045.96

Finding the Fourth Proportional to 619,450.60, 928,979.08 and 421,045.96

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Solution

The fourth proportional to 619,450.60, 928,979.08 and 421,045.96 is: 631,435.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,450.60 : 928,979.08 = 421,045.96 : x
  2. Step 2: Convert to fraction form
    619,450.60/928,979.08 = 421,045.96/x
  3. Step 3: Cross multiply
    619,450.60x = 928,979.08 × 421,045.96
  4. Step 4: Simplify right side
    619,450.60x = 391,142,888,558.52
  5. Step 5: Solve for x
    x = 391,142,888,558.52/619,450.60
  6. Step 6: Final answer
    x = 631,435.16

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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.