Home / 718,962,365,342.07-992,155,802,079.78-389,362,732,378.92

Finding the Fourth Proportional to 718,962,365,342.07, 992,155,802,079.78 and 389,362,732,378.92

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Solution

The fourth proportional to 718,962,365,342.07, 992,155,802,079.78 and 389,362,732,378.92 is: 537,313,929,999.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,962,365,342.07 : 992,155,802,079.78 = 389,362,732,378.92 : x
  2. Step 2: Convert to fraction form
    718,962,365,342.07/992,155,802,079.78 = 389,362,732,378.92/x
  3. Step 3: Cross multiply
    718,962,365,342.07x = 992,155,802,079.78 × 389,362,732,378.92
  4. Step 4: Simplify right side
    718,962,365,342.07x = 386,308,494,043,382,112,321,536
  5. Step 5: Solve for x
    x = 386,308,494,043,382,112,321,536/718,962,365,342.07
  6. Step 6: Final answer
    x = 537,313,929,999.08

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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.