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Finding the Fourth Proportional to 604,818.70, 907,228.05 and 205,909.90

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Solution

The fourth proportional to 604,818.70, 907,228.05 and 205,909.90 is: 308,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,818.70 : 907,228.05 = 205,909.90 : x
  2. Step 2: Convert to fraction form
    604,818.70/907,228.05 = 205,909.90/x
  3. Step 3: Cross multiply
    604,818.70x = 907,228.05 × 205,909.90
  4. Step 4: Simplify right side
    604,818.70x = 186,807,237,052.70
  5. Step 5: Solve for x
    x = 186,807,237,052.70/604,818.70
  6. Step 6: Final answer
    x = 308,864.85

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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.