Home / 679,803.51-1,018,786.70-258,849.75

Finding the Fourth Proportional to 679,803.51, 1,018,786.70 and 258,849.75

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Solution

The fourth proportional to 679,803.51, 1,018,786.70 and 258,849.75 is: 387,924.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,803.51 : 1,018,786.70 = 258,849.75 : x
  2. Step 2: Convert to fraction form
    679,803.51/1,018,786.70 = 258,849.75/x
  3. Step 3: Cross multiply
    679,803.51x = 1,018,786.70 × 258,849.75
  4. Step 4: Simplify right side
    679,803.51x = 263,712,687,065.90
  5. Step 5: Solve for x
    x = 263,712,687,065.90/679,803.51
  6. Step 6: Final answer
    x = 387,924.87

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1.5x scale

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.