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Finding the Fourth Proportional to 490,667,878.80, 735,376,627.80 and 260,747,110.80

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Solution

The fourth proportional to 490,667,878.80, 735,376,627.80 and 260,747,110.80 is: 390,788,432.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,667,878.80 : 735,376,627.80 = 260,747,110.80 : x
  2. Step 2: Convert to fraction form
    490,667,878.80/735,376,627.80 = 260,747,110.80/x
  3. Step 3: Cross multiply
    490,667,878.80x = 735,376,627.80 × 260,747,110.80
  4. Step 4: Simplify right side
    490,667,878.80x = 191,747,331,048,696,960
  5. Step 5: Solve for x
    x = 191,747,331,048,696,960/490,667,878.80
  6. Step 6: Final answer
    x = 390,788,432.12

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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.