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Finding the Fourth Proportional to 626,703.80, 940,055.70 and 205,878.20

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Solution

The fourth proportional to 626,703.80, 940,055.70 and 205,878.20 is: 308,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,703.80 : 940,055.70 = 205,878.20 : x
  2. Step 2: Convert to fraction form
    626,703.80/940,055.70 = 205,878.20/x
  3. Step 3: Cross multiply
    626,703.80x = 940,055.70 × 205,878.20
  4. Step 4: Simplify right side
    626,703.80x = 193,536,975,415.74
  5. Step 5: Solve for x
    x = 193,536,975,415.74/626,703.80
  6. Step 6: Final answer
    x = 308,817.30

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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.