Home / 679,335.67-1,019,178.47-258,381.91

Finding the Fourth Proportional to 679,335.67, 1,019,178.47 and 258,381.91

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Solution

The fourth proportional to 679,335.67, 1,019,178.47 and 258,381.91 is: 387,639.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,335.67 : 1,019,178.47 = 258,381.91 : x
  2. Step 2: Convert to fraction form
    679,335.67/1,019,178.47 = 258,381.91/x
  3. Step 3: Cross multiply
    679,335.67x = 1,019,178.47 × 258,381.91
  4. Step 4: Simplify right side
    679,335.67x = 263,337,279,709.48
  5. Step 5: Solve for x
    x = 263,337,279,709.48/679,335.67
  6. Step 6: Final answer
    x = 387,639.41

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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.