Home / 864,013.90-1,296,020.85-528,090.70

Finding the Fourth Proportional to 864,013.90, 1,296,020.85 and 528,090.70

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Solution

The fourth proportional to 864,013.90, 1,296,020.85 and 528,090.70 is: 792,136.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,013.90 : 1,296,020.85 = 528,090.70 : x
  2. Step 2: Convert to fraction form
    864,013.90/1,296,020.85 = 528,090.70/x
  3. Step 3: Cross multiply
    864,013.90x = 1,296,020.85 × 528,090.70
  4. Step 4: Simplify right side
    864,013.90x = 684,416,557,891.10
  5. Step 5: Solve for x
    x = 684,416,557,891.10/864,013.90
  6. Step 6: Final answer
    x = 792,136.05

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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.