Home / 838,129.80-1,257,194.70-306,032.70

Finding the Fourth Proportional to 838,129.80, 1,257,194.70 and 306,032.70

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Solution

The fourth proportional to 838,129.80, 1,257,194.70 and 306,032.70 is: 459,049.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,129.80 : 1,257,194.70 = 306,032.70 : x
  2. Step 2: Convert to fraction form
    838,129.80/1,257,194.70 = 306,032.70/x
  3. Step 3: Cross multiply
    838,129.80x = 1,257,194.70 × 306,032.70
  4. Step 4: Simplify right side
    838,129.80x = 384,742,688,466.69
  5. Step 5: Solve for x
    x = 384,742,688,466.69/838,129.80
  6. Step 6: Final answer
    x = 459,049.05

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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.