Home / 521,724,378.08-719,969,955.90-286,770,015.76

Finding the Fourth Proportional to 521,724,378.08, 719,969,955.90 and 286,770,015.76

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Solution

The fourth proportional to 521,724,378.08, 719,969,955.90 and 286,770,015.76 is: 395,737,297.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,724,378.08 : 719,969,955.90 = 286,770,015.76 : x
  2. Step 2: Convert to fraction form
    521,724,378.08/719,969,955.90 = 286,770,015.76/x
  3. Step 3: Cross multiply
    521,724,378.08x = 719,969,955.90 × 286,770,015.76
  4. Step 4: Simplify right side
    521,724,378.08x = 206,465,795,600,169,504
  5. Step 5: Solve for x
    x = 206,465,795,600,169,504/521,724,378.08
  6. Step 6: Final answer
    x = 395,737,297.84

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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.