Home / 859,095.90-1,288,643.85-543,908.70

Finding the Fourth Proportional to 859,095.90, 1,288,643.85 and 543,908.70

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Solution

The fourth proportional to 859,095.90, 1,288,643.85 and 543,908.70 is: 815,863.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,095.90 : 1,288,643.85 = 543,908.70 : x
  2. Step 2: Convert to fraction form
    859,095.90/1,288,643.85 = 543,908.70/x
  3. Step 3: Cross multiply
    859,095.90x = 1,288,643.85 × 543,908.70
  4. Step 4: Simplify right side
    859,095.90x = 700,904,601,216.50
  5. Step 5: Solve for x
    x = 700,904,601,216.50/859,095.90
  6. Step 6: Final answer
    x = 815,863.05

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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.