Home / 679,953,999.20-1,019,930,998.80-219,938,669.60

Finding the Fourth Proportional to 679,953,999.20, 1,019,930,998.80 and 219,938,669.60

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Solution

The fourth proportional to 679,953,999.20, 1,019,930,998.80 and 219,938,669.60 is: 329,908,004.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,953,999.20 : 1,019,930,998.80 = 219,938,669.60 : x
  2. Step 2: Convert to fraction form
    679,953,999.20/1,019,930,998.80 = 219,938,669.60/x
  3. Step 3: Cross multiply
    679,953,999.20x = 1,019,930,998.80 × 219,938,669.60
  4. Step 4: Simplify right side
    679,953,999.20x = 224,322,266,959,871,168
  5. Step 5: Solve for x
    x = 224,322,266,959,871,168/679,953,999.20
  6. Step 6: Final answer
    x = 329,908,004.40

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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.