Home / 638,749.80-958,124.70-543,761.10

Finding the Fourth Proportional to 638,749.80, 958,124.70 and 543,761.10

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Solution

The fourth proportional to 638,749.80, 958,124.70 and 543,761.10 is: 815,641.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,749.80 : 958,124.70 = 543,761.10 : x
  2. Step 2: Convert to fraction form
    638,749.80/958,124.70 = 543,761.10/x
  3. Step 3: Cross multiply
    638,749.80x = 958,124.70 × 543,761.10
  4. Step 4: Simplify right side
    638,749.80x = 520,990,940,809.17
  5. Step 5: Solve for x
    x = 520,990,940,809.17/638,749.80
  6. Step 6: Final answer
    x = 815,641.65

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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.