Home / 829,081.80-1,243,622.70-577,139.40

Finding the Fourth Proportional to 829,081.80, 1,243,622.70 and 577,139.40

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Solution

The fourth proportional to 829,081.80, 1,243,622.70 and 577,139.40 is: 865,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,081.80 : 1,243,622.70 = 577,139.40 : x
  2. Step 2: Convert to fraction form
    829,081.80/1,243,622.70 = 577,139.40/x
  3. Step 3: Cross multiply
    829,081.80x = 1,243,622.70 × 577,139.40
  4. Step 4: Simplify right side
    829,081.80x = 717,743,658,904.38
  5. Step 5: Solve for x
    x = 717,743,658,904.38/829,081.80
  6. Step 6: Final answer
    x = 865,709.10

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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.