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Finding the Fourth Proportional to 290,246,363.60, 407,492,821.60 and 290,246,363.60

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Solution

The fourth proportional to 290,246,363.60, 407,492,821.60 and 290,246,363.60 is: 407,492,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,246,363.60 : 407,492,821.60 = 290,246,363.60 : x
  2. Step 2: Convert to fraction form
    290,246,363.60/407,492,821.60 = 290,246,363.60/x
  3. Step 3: Cross multiply
    290,246,363.60x = 407,492,821.60 × 290,246,363.60
  4. Step 4: Simplify right side
    290,246,363.60x = 118,273,309,662,503,552
  5. Step 5: Solve for x
    x = 118,273,309,662,503,552/290,246,363.60
  6. Step 6: Final answer
    x = 407,492,821.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.