Home / 850,853.20-1,276,279.80-430,949.20

Finding the Fourth Proportional to 850,853.20, 1,276,279.80 and 430,949.20

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Solution

The fourth proportional to 850,853.20, 1,276,279.80 and 430,949.20 is: 646,423.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,853.20 : 1,276,279.80 = 430,949.20 : x
  2. Step 2: Convert to fraction form
    850,853.20/1,276,279.80 = 430,949.20/x
  3. Step 3: Cross multiply
    850,853.20x = 1,276,279.80 × 430,949.20
  4. Step 4: Simplify right side
    850,853.20x = 550,011,758,786.16
  5. Step 5: Solve for x
    x = 550,011,758,786.16/850,853.20
  6. Step 6: Final answer
    x = 646,423.80

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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.