Home / 1,114,921,603.26-1,538,632,266.08-638,704,010.28

Finding the Fourth Proportional to 1,114,921,603.26, 1,538,632,266.08 and 638,704,010.28

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Solution

The fourth proportional to 1,114,921,603.26, 1,538,632,266.08 and 638,704,010.28 is: 881,434,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114,921,603.26 : 1,538,632,266.08 = 638,704,010.28 : x
  2. Step 2: Convert to fraction form
    1,114,921,603.26/1,538,632,266.08 = 638,704,010.28/x
  3. Step 3: Cross multiply
    1,114,921,603.26x = 1,538,632,266.08 × 638,704,010.28
  4. Step 4: Simplify right side
    1,114,921,603.26x = 982,730,598,691,499,904
  5. Step 5: Solve for x
    x = 982,730,598,691,499,904/1,114,921,603.26
  6. Step 6: Final answer
    x = 881,434,708.79

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Double scale
Find fourth proportional to 1,114,921,604.26, 1,538,632,267.46 and 638,704,011.28
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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.