Home / 505,961,280.74-698,213,452.65-279,908,615.90

Finding the Fourth Proportional to 505,961,280.74, 698,213,452.65 and 279,908,615.90

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Solution

The fourth proportional to 505,961,280.74, 698,213,452.65 and 279,908,615.90 is: 386,266,634.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,961,280.74 : 698,213,452.65 = 279,908,615.90 : x
  2. Step 2: Convert to fraction form
    505,961,280.74/698,213,452.65 = 279,908,615.90/x
  3. Step 3: Cross multiply
    505,961,280.74x = 698,213,452.65 × 279,908,615.90
  4. Step 4: Simplify right side
    505,961,280.74x = 195,435,961,130,530,592
  5. Step 5: Solve for x
    x = 195,435,961,130,530,592/505,961,280.74
  6. Step 6: Final answer
    x = 386,266,634.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.