Home / 858,768.20-1,288,152.30-297,802.70

Finding the Fourth Proportional to 858,768.20, 1,288,152.30 and 297,802.70

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Solution

The fourth proportional to 858,768.20, 1,288,152.30 and 297,802.70 is: 446,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,768.20 : 1,288,152.30 = 297,802.70 : x
  2. Step 2: Convert to fraction form
    858,768.20/1,288,152.30 = 297,802.70/x
  3. Step 3: Cross multiply
    858,768.20x = 1,288,152.30 × 297,802.70
  4. Step 4: Simplify right side
    858,768.20x = 383,615,232,951.21
  5. Step 5: Solve for x
    x = 383,615,232,951.21/858,768.20
  6. Step 6: Final answer
    x = 446,704.05

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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.