Home / 931,609.26-1,285,671.39-518,189.70

Finding the Fourth Proportional to 931,609.26, 1,285,671.39 and 518,189.70

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Solution

The fourth proportional to 931,609.26, 1,285,671.39 and 518,189.70 is: 715,129.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,609.26 : 1,285,671.39 = 518,189.70 : x
  2. Step 2: Convert to fraction form
    931,609.26/1,285,671.39 = 518,189.70/x
  3. Step 3: Cross multiply
    931,609.26x = 1,285,671.39 × 518,189.70
  4. Step 4: Simplify right side
    931,609.26x = 666,221,671,882.68
  5. Step 5: Solve for x
    x = 666,221,671,882.68/931,609.26
  6. Step 6: Final answer
    x = 715,129.94

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.