Home / 1,113,231,399.63-1,536,782,372.54-643,241,808.19

Finding the Fourth Proportional to 1,113,231,399.63, 1,536,782,372.54 and 643,241,808.19

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Solution

The fourth proportional to 1,113,231,399.63, 1,536,782,372.54 and 643,241,808.19 is: 887,975,916.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113,231,399.63 : 1,536,782,372.54 = 643,241,808.19 : x
  2. Step 2: Convert to fraction form
    1,113,231,399.63/1,536,782,372.54 = 643,241,808.19/x
  3. Step 3: Cross multiply
    1,113,231,399.63x = 1,536,782,372.54 × 643,241,808.19
  4. Step 4: Simplify right side
    1,113,231,399.63x = 988,522,672,107,147,904
  5. Step 5: Solve for x
    x = 988,522,672,107,147,904/1,113,231,399.63
  6. Step 6: Final answer
    x = 887,975,916.27

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Double scale
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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.