Home / 679,999.28-1,019,065.80-430,234.16

Finding the Fourth Proportional to 679,999.28, 1,019,065.80 and 430,234.16

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Solution

The fourth proportional to 679,999.28, 1,019,065.80 and 430,234.16 is: 644,760.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,999.28 : 1,019,065.80 = 430,234.16 : x
  2. Step 2: Convert to fraction form
    679,999.28/1,019,065.80 = 430,234.16/x
  3. Step 3: Cross multiply
    679,999.28x = 1,019,065.80 × 430,234.16
  4. Step 4: Simplify right side
    679,999.28x = 438,436,918,447.73
  5. Step 5: Solve for x
    x = 438,436,918,447.73/679,999.28
  6. Step 6: Final answer
    x = 644,760.86

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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.