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Finding the Fourth Proportional to 679,968,993.70, 1,019,953,490.55 and 219,953,664.10

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Solution

The fourth proportional to 679,968,993.70, 1,019,953,490.55 and 219,953,664.10 is: 329,930,496.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,968,993.70 : 1,019,953,490.55 = 219,953,664.10 : x
  2. Step 2: Convert to fraction form
    679,968,993.70/1,019,953,490.55 = 219,953,664.10/x
  3. Step 3: Cross multiply
    679,968,993.70x = 1,019,953,490.55 × 219,953,664.10
  4. Step 4: Simplify right side
    679,968,993.70x = 224,342,507,458,057,216
  5. Step 5: Solve for x
    x = 224,342,507,458,057,216/679,968,993.70
  6. Step 6: Final answer
    x = 329,930,496.15

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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.