Home / 638,360.07-957,680.13-189,116.06

Finding the Fourth Proportional to 638,360.07, 957,680.13 and 189,116.06

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Solution

The fourth proportional to 638,360.07, 957,680.13 and 189,116.06 is: 283,715.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,360.07 : 957,680.13 = 189,116.06 : x
  2. Step 2: Convert to fraction form
    638,360.07/957,680.13 = 189,116.06/x
  3. Step 3: Cross multiply
    638,360.07x = 957,680.13 × 189,116.06
  4. Step 4: Simplify right side
    638,360.07x = 181,112,688,137.49
  5. Step 5: Solve for x
    x = 181,112,688,137.49/638,360.07
  6. Step 6: Final answer
    x = 283,715.57

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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.