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Finding the Fourth Proportional to 604,657.80, 906,986.70 and 220,435.50

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Solution

The fourth proportional to 604,657.80, 906,986.70 and 220,435.50 is: 330,653.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,657.80 : 906,986.70 = 220,435.50 : x
  2. Step 2: Convert to fraction form
    604,657.80/906,986.70 = 220,435.50/x
  3. Step 3: Cross multiply
    604,657.80x = 906,986.70 × 220,435.50
  4. Step 4: Simplify right side
    604,657.80x = 199,932,066,707.85
  5. Step 5: Solve for x
    x = 199,932,066,707.85/604,657.80
  6. Step 6: Final answer
    x = 330,653.25

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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.