Home / 859,468.40-1,288,401.23-290,451.57

Finding the Fourth Proportional to 859,468.40, 1,288,401.23 and 290,451.57

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Solution

The fourth proportional to 859,468.40, 1,288,401.23 and 290,451.57 is: 435,406.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,468.40 : 1,288,401.23 = 290,451.57 : x
  2. Step 2: Convert to fraction form
    859,468.40/1,288,401.23 = 290,451.57/x
  3. Step 3: Cross multiply
    859,468.40x = 1,288,401.23 × 290,451.57
  4. Step 4: Simplify right side
    859,468.40x = 374,218,160,043.43
  5. Step 5: Solve for x
    x = 374,218,160,043.43/859,468.40
  6. Step 6: Final answer
    x = 435,406.54

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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.