Home / 859,095.40-1,288,315.05-259,857.40

Finding the Fourth Proportional to 859,095.40, 1,288,315.05 and 259,857.40

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Solution

The fourth proportional to 859,095.40, 1,288,315.05 and 259,857.40 is: 389,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,095.40 : 1,288,315.05 = 259,857.40 : x
  2. Step 2: Convert to fraction form
    859,095.40/1,288,315.05 = 259,857.40/x
  3. Step 3: Cross multiply
    859,095.40x = 1,288,315.05 × 259,857.40
  4. Step 4: Simplify right side
    859,095.40x = 334,778,199,273.87
  5. Step 5: Solve for x
    x = 334,778,199,273.87/859,095.40
  6. Step 6: Final answer
    x = 389,686.87

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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.