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Finding the Fourth Proportional to 604,612.20, 906,918.30 and 205,703.40

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Solution

The fourth proportional to 604,612.20, 906,918.30 and 205,703.40 is: 308,555.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,612.20 : 906,918.30 = 205,703.40 : x
  2. Step 2: Convert to fraction form
    604,612.20/906,918.30 = 205,703.40/x
  3. Step 3: Cross multiply
    604,612.20x = 906,918.30 × 205,703.40
  4. Step 4: Simplify right side
    604,612.20x = 186,556,177,832.22
  5. Step 5: Solve for x
    x = 186,556,177,832.22/604,612.20
  6. Step 6: Final answer
    x = 308,555.10

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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.