Home / 1,113,231,400.63-1,536,782,373.92-643,241,809.19

Finding the Fourth Proportional to 1,113,231,400.63, 1,536,782,373.92 and 643,241,809.19

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Solution

The fourth proportional to 1,113,231,400.63, 1,536,782,373.92 and 643,241,809.19 is: 887,975,917.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113,231,400.63 : 1,536,782,373.92 = 643,241,809.19 : x
  2. Step 2: Convert to fraction form
    1,113,231,400.63/1,536,782,373.92 = 643,241,809.19/x
  3. Step 3: Cross multiply
    1,113,231,400.63x = 1,536,782,373.92 × 643,241,809.19
  4. Step 4: Simplify right side
    1,113,231,400.63x = 988,522,674,531,603,968
  5. Step 5: Solve for x
    x = 988,522,674,531,603,968/1,113,231,400.63
  6. Step 6: Final answer
    x = 887,975,917.65

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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.