Home / 679,311.98-1,018,574.38-279,501.12

Finding the Fourth Proportional to 679,311.98, 1,018,574.38 and 279,501.12

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Solution

The fourth proportional to 679,311.98, 1,018,574.38 and 279,501.12 is: 419,089.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,311.98 : 1,018,574.38 = 279,501.12 : x
  2. Step 2: Convert to fraction form
    679,311.98/1,018,574.38 = 279,501.12/x
  3. Step 3: Cross multiply
    679,311.98x = 1,018,574.38 × 279,501.12
  4. Step 4: Simplify right side
    679,311.98x = 284,692,680,013.31
  5. Step 5: Solve for x
    x = 284,692,680,013.31/679,311.98
  6. Step 6: Final answer
    x = 419,089.74

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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.