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Finding the Fourth Proportional to 617,805,478.80, 926,258,906.34 and 290,112,134.76

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Solution

The fourth proportional to 617,805,478.80, 926,258,906.34 and 290,112,134.76 is: 434,957,212.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,805,478.80 : 926,258,906.34 = 290,112,134.76 : x
  2. Step 2: Convert to fraction form
    617,805,478.80/926,258,906.34 = 290,112,134.76/x
  3. Step 3: Cross multiply
    617,805,478.80x = 926,258,906.34 × 290,112,134.76
  4. Step 4: Simplify right side
    617,805,478.80x = 268,718,948,658,760,288
  5. Step 5: Solve for x
    x = 268,718,948,658,760,288/617,805,478.80
  6. Step 6: Final answer
    x = 434,957,212.07

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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.