Home / 1,167,538,540.40-1,611,203,313.24-638,902,638.56

Finding the Fourth Proportional to 1,167,538,540.40, 1,611,203,313.24 and 638,902,638.56

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Solution

The fourth proportional to 1,167,538,540.40, 1,611,203,313.24 and 638,902,638.56 is: 881,685,710.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167,538,540.40 : 1,611,203,313.24 = 638,902,638.56 : x
  2. Step 2: Convert to fraction form
    1,167,538,540.40/1,611,203,313.24 = 638,902,638.56/x
  3. Step 3: Cross multiply
    1,167,538,540.40x = 1,611,203,313.24 × 638,902,638.56
  4. Step 4: Simplify right side
    1,167,538,540.40x = 1,029,402,048,085,650,048
  5. Step 5: Solve for x
    x = 1,029,402,048,085,650,048/1,167,538,540.40
  6. Step 6: Final answer
    x = 881,685,710.98

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1.5x scale

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.