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Finding the Fourth Proportional to 839,800.88, 1,259,696.64 and 208,714.40

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Solution

The fourth proportional to 839,800.88, 1,259,696.64 and 208,714.40 is: 313,070.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,800.88 : 1,259,696.64 = 208,714.40 : x
  2. Step 2: Convert to fraction form
    839,800.88/1,259,696.64 = 208,714.40/x
  3. Step 3: Cross multiply
    839,800.88x = 1,259,696.64 × 208,714.40
  4. Step 4: Simplify right side
    839,800.88x = 262,916,828,399.62
  5. Step 5: Solve for x
    x = 262,916,828,399.62/839,800.88
  6. Step 6: Final answer
    x = 313,070.44

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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.