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Finding the Fourth Proportional to 617,805,971.80, 926,694,788.10 and 311,015,699.80

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Solution

The fourth proportional to 617,805,971.80, 926,694,788.10 and 311,015,699.80 is: 466,516,416.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,805,971.80 : 926,694,788.10 = 311,015,699.80 : x
  2. Step 2: Convert to fraction form
    617,805,971.80/926,694,788.10 = 311,015,699.80/x
  3. Step 3: Cross multiply
    617,805,971.80x = 926,694,788.10 × 311,015,699.80
  4. Step 4: Simplify right side
    617,805,971.80x = 288,216,628,021,934,240
  5. Step 5: Solve for x
    x = 288,216,628,021,934,240/617,805,971.80
  6. Step 6: Final answer
    x = 466,516,416.44

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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.