Home / 850,853.10-1,276,279.65-430,074.30

Finding the Fourth Proportional to 850,853.10, 1,276,279.65 and 430,074.30

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Solution

The fourth proportional to 850,853.10, 1,276,279.65 and 430,074.30 is: 645,111.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,853.10 : 1,276,279.65 = 430,074.30 : x
  2. Step 2: Convert to fraction form
    850,853.10/1,276,279.65 = 430,074.30/x
  3. Step 3: Cross multiply
    850,853.10x = 1,276,279.65 × 430,074.30
  4. Step 4: Simplify right side
    850,853.10x = 548,895,077,078.00
  5. Step 5: Solve for x
    x = 548,895,077,078.00/850,853.10
  6. Step 6: Final answer
    x = 645,111.45

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Similar ratio
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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.