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Finding the Fourth Proportional to 553,673,478.20, 830,592,799.29 and 203,892,651.59

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Solution

The fourth proportional to 553,673,478.20, 830,592,799.29 and 203,892,651.59 is: 305,869,388.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,673,478.20 : 830,592,799.29 = 203,892,651.59 : x
  2. Step 2: Convert to fraction form
    553,673,478.20/830,592,799.29 = 203,892,651.59/x
  3. Step 3: Cross multiply
    553,673,478.20x = 830,592,799.29 × 203,892,651.59
  4. Step 4: Simplify right side
    553,673,478.20x = 169,351,768,234,645,792
  5. Step 5: Solve for x
    x = 169,351,768,234,645,792/553,673,478.20
  6. Step 6: Final answer
    x = 305,869,388.56

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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.