Home / 1,128,217,688.64-1,692,721,372.32-438,608,824.56

Finding the Fourth Proportional to 1,128,217,688.64, 1,692,721,372.32 and 438,608,824.56

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Solution

The fourth proportional to 1,128,217,688.64, 1,692,721,372.32 and 438,608,824.56 is: 658,066,735.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,217,688.64 : 1,692,721,372.32 = 438,608,824.56 : x
  2. Step 2: Convert to fraction form
    1,128,217,688.64/1,692,721,372.32 = 438,608,824.56/x
  3. Step 3: Cross multiply
    1,128,217,688.64x = 1,692,721,372.32 × 438,608,824.56
  4. Step 4: Simplify right side
    1,128,217,688.64x = 742,442,531,420,865,280
  5. Step 5: Solve for x
    x = 742,442,531,420,865,280/1,128,217,688.64
  6. Step 6: Final answer
    x = 658,066,735.61

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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.