Home / 810,197.40-1,215,296.10-528,187.80

Finding the Fourth Proportional to 810,197.40, 1,215,296.10 and 528,187.80

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Solution

The fourth proportional to 810,197.40, 1,215,296.10 and 528,187.80 is: 792,281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,197.40 : 1,215,296.10 = 528,187.80 : x
  2. Step 2: Convert to fraction form
    810,197.40/1,215,296.10 = 528,187.80/x
  3. Step 3: Cross multiply
    810,197.40x = 1,215,296.10 × 528,187.80
  4. Step 4: Simplify right side
    810,197.40x = 641,904,573,407.58
  5. Step 5: Solve for x
    x = 641,904,573,407.58/810,197.40
  6. Step 6: Final answer
    x = 792,281.70

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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.