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Finding the Fourth Proportional to 289,618,015.80, 434,427,023.70 and 289,618,015.80

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Solution

The fourth proportional to 289,618,015.80, 434,427,023.70 and 289,618,015.80 is: 434,427,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,618,015.80 : 434,427,023.70 = 289,618,015.80 : x
  2. Step 2: Convert to fraction form
    289,618,015.80/434,427,023.70 = 289,618,015.80/x
  3. Step 3: Cross multiply
    289,618,015.80x = 434,427,023.70 × 289,618,015.80
  4. Step 4: Simplify right side
    289,618,015.80x = 125,817,892,613,893,584
  5. Step 5: Solve for x
    x = 125,817,892,613,893,584/289,618,015.80
  6. Step 6: Final answer
    x = 434,427,023.70

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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.