Home / 786,806,468.64-1,084,783,542.48-645,155,811.36

Finding the Fourth Proportional to 786,806,468.64, 1,084,783,542.48 and 645,155,811.36

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Solution

The fourth proportional to 786,806,468.64, 1,084,783,542.48 and 645,155,811.36 is: 889,487,357.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,806,468.64 : 1,084,783,542.48 = 645,155,811.36 : x
  2. Step 2: Convert to fraction form
    786,806,468.64/1,084,783,542.48 = 645,155,811.36/x
  3. Step 3: Cross multiply
    786,806,468.64x = 1,084,783,542.48 × 645,155,811.36
  4. Step 4: Simplify right side
    786,806,468.64x = 699,854,406,498,659,456
  5. Step 5: Solve for x
    x = 699,854,406,498,659,456/786,806,468.64
  6. Step 6: Final answer
    x = 889,487,357.30

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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.