Home / 958,137.20-1,437,205.80-640,876.40

Finding the Fourth Proportional to 958,137.20, 1,437,205.80 and 640,876.40

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Solution

The fourth proportional to 958,137.20, 1,437,205.80 and 640,876.40 is: 961,314.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    958,137.20 : 1,437,205.80 = 640,876.40 : x
  2. Step 2: Convert to fraction form
    958,137.20/1,437,205.80 = 640,876.40/x
  3. Step 3: Cross multiply
    958,137.20x = 1,437,205.80 × 640,876.40
  4. Step 4: Simplify right side
    958,137.20x = 921,071,279,163.12
  5. Step 5: Solve for x
    x = 921,071,279,163.12/958,137.20
  6. Step 6: Final answer
    x = 961,314.60

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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.