Home / 1,139,807,107.60-1,572,939,631.74-644,759,187.28

Finding the Fourth Proportional to 1,139,807,107.60, 1,572,939,631.74 and 644,759,187.28

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Solution

The fourth proportional to 1,139,807,107.60, 1,572,939,631.74 and 644,759,187.28 is: 889,770,972.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,807,107.60 : 1,572,939,631.74 = 644,759,187.28 : x
  2. Step 2: Convert to fraction form
    1,139,807,107.60/1,572,939,631.74 = 644,759,187.28/x
  3. Step 3: Cross multiply
    1,139,807,107.60x = 1,572,939,631.74 × 644,759,187.28
  4. Step 4: Simplify right side
    1,139,807,107.60x = 1,014,167,278,601,184,896
  5. Step 5: Solve for x
    x = 1,014,167,278,601,184,896/1,139,807,107.60
  6. Step 6: Final answer
    x = 889,770,972.51

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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.