Home / 1,137,756,896.40-1,570,231,940.40-642,751,491.36

Finding the Fourth Proportional to 1,137,756,896.40, 1,570,231,940.40 and 642,751,491.36

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Solution

The fourth proportional to 1,137,756,896.40, 1,570,231,940.40 and 642,751,491.36 is: 887,069,043.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,756,896.40 : 1,570,231,940.40 = 642,751,491.36 : x
  2. Step 2: Convert to fraction form
    1,137,756,896.40/1,570,231,940.40 = 642,751,491.36/x
  3. Step 3: Cross multiply
    1,137,756,896.40x = 1,570,231,940.40 × 642,751,491.36
  4. Step 4: Simplify right side
    1,137,756,896.40x = 1,009,268,921,473,206,656
  5. Step 5: Solve for x
    x = 1,009,268,921,473,206,656/1,137,756,896.40
  6. Step 6: Final answer
    x = 887,069,043.19

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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.