Home / 641,725.32-885,587.94-355,250.19

Finding the Fourth Proportional to 641,725.32, 885,587.94 and 355,250.19

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Solution

The fourth proportional to 641,725.32, 885,587.94 and 355,250.19 is: 490,249.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,725.32 : 885,587.94 = 355,250.19 : x
  2. Step 2: Convert to fraction form
    641,725.32/885,587.94 = 355,250.19/x
  3. Step 3: Cross multiply
    641,725.32x = 885,587.94 × 355,250.19
  4. Step 4: Simplify right side
    641,725.32x = 314,605,283,946.71
  5. Step 5: Solve for x
    x = 314,605,283,946.71/641,725.32
  6. Step 6: Final answer
    x = 490,249.14

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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.