Home / 851,034.60-1,276,551.90-430,255.80

Finding the Fourth Proportional to 851,034.60, 1,276,551.90 and 430,255.80

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Solution

The fourth proportional to 851,034.60, 1,276,551.90 and 430,255.80 is: 645,383.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,034.60 : 1,276,551.90 = 430,255.80 : x
  2. Step 2: Convert to fraction form
    851,034.60/1,276,551.90 = 430,255.80/x
  3. Step 3: Cross multiply
    851,034.60x = 1,276,551.90 × 430,255.80
  4. Step 4: Simplify right side
    851,034.60x = 549,243,858,976.02
  5. Step 5: Solve for x
    x = 549,243,858,976.02/851,034.60
  6. Step 6: Final answer
    x = 645,383.70

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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.