Home / 858,959.90-1,288,111.80-259,721.90

Finding the Fourth Proportional to 858,959.90, 1,288,111.80 and 259,721.90

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Solution

The fourth proportional to 858,959.90, 1,288,111.80 and 259,721.90 is: 389,483.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,959.90 : 1,288,111.80 = 259,721.90 : x
  2. Step 2: Convert to fraction form
    858,959.90/1,288,111.80 = 259,721.90/x
  3. Step 3: Cross multiply
    858,959.90x = 1,288,111.80 × 259,721.90
  4. Step 4: Simplify right side
    858,959.90x = 334,550,844,108.42
  5. Step 5: Solve for x
    x = 334,550,844,108.42/858,959.90
  6. Step 6: Final answer
    x = 389,483.66

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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.