Home / 850,944.70-1,276,417.05-431,040.70

Finding the Fourth Proportional to 850,944.70, 1,276,417.05 and 431,040.70

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Solution

The fourth proportional to 850,944.70, 1,276,417.05 and 431,040.70 is: 646,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,944.70 : 1,276,417.05 = 431,040.70 : x
  2. Step 2: Convert to fraction form
    850,944.70/1,276,417.05 = 431,040.70/x
  3. Step 3: Cross multiply
    850,944.70x = 1,276,417.05 × 431,040.70
  4. Step 4: Simplify right side
    850,944.70x = 550,187,698,723.94
  5. Step 5: Solve for x
    x = 550,187,698,723.94/850,944.70
  6. Step 6: Final answer
    x = 646,561.05

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Double scale
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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.