Home / 828,990.30-1,243,485.45-577,047.90

Finding the Fourth Proportional to 828,990.30, 1,243,485.45 and 577,047.90

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Solution

The fourth proportional to 828,990.30, 1,243,485.45 and 577,047.90 is: 865,571.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,990.30 : 1,243,485.45 = 577,047.90 : x
  2. Step 2: Convert to fraction form
    828,990.30/1,243,485.45 = 577,047.90/x
  3. Step 3: Cross multiply
    828,990.30x = 1,243,485.45 × 577,047.90
  4. Step 4: Simplify right side
    828,990.30x = 717,550,667,603.06
  5. Step 5: Solve for x
    x = 717,550,667,603.06/828,990.30
  6. Step 6: Final answer
    x = 865,571.85

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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.