Home / 679,903.48-1,018,936.28-258,949.72

Finding the Fourth Proportional to 679,903.48, 1,018,936.28 and 258,949.72

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Solution

The fourth proportional to 679,903.48, 1,018,936.28 and 258,949.72 is: 388,074.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,903.48 : 1,018,936.28 = 258,949.72 : x
  2. Step 2: Convert to fraction form
    679,903.48/1,018,936.28 = 258,949.72/x
  3. Step 3: Cross multiply
    679,903.48x = 1,018,936.28 × 258,949.72
  4. Step 4: Simplify right side
    679,903.48x = 263,853,263,109.09
  5. Step 5: Solve for x
    x = 263,853,263,109.09/679,903.48
  6. Step 6: Final answer
    x = 388,074.59

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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.