Home / 786,084,426.72-1,178,505,352.08-392,409,208.80

Finding the Fourth Proportional to 786,084,426.72, 1,178,505,352.08 and 392,409,208.80

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Solution

The fourth proportional to 786,084,426.72, 1,178,505,352.08 and 392,409,208.80 is: 588,303,669.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,084,426.72 : 1,178,505,352.08 = 392,409,208.80 : x
  2. Step 2: Convert to fraction form
    786,084,426.72/1,178,505,352.08 = 392,409,208.80/x
  3. Step 3: Cross multiply
    786,084,426.72x = 1,178,505,352.08 × 392,409,208.80
  4. Step 4: Simplify right side
    786,084,426.72x = 462,456,352,776,278,208
  5. Step 5: Solve for x
    x = 462,456,352,776,278,208/786,084,426.72
  6. Step 6: Final answer
    x = 588,303,669.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.