Home / 851,036.70-1,276,555.05-762,390.30

Finding the Fourth Proportional to 851,036.70, 1,276,555.05 and 762,390.30

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Solution

The fourth proportional to 851,036.70, 1,276,555.05 and 762,390.30 is: 1,143,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,036.70 : 1,276,555.05 = 762,390.30 : x
  2. Step 2: Convert to fraction form
    851,036.70/1,276,555.05 = 762,390.30/x
  3. Step 3: Cross multiply
    851,036.70x = 1,276,555.05 × 762,390.30
  4. Step 4: Simplify right side
    851,036.70x = 973,233,187,536.02
  5. Step 5: Solve for x
    x = 973,233,187,536.02/851,036.70
  6. Step 6: Final answer
    x = 1,143,585.45

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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.