Home / 709,971,319.87-1,065,071,415.07-218,684,361.31

Finding the Fourth Proportional to 709,971,319.87, 1,065,071,415.07 and 218,684,361.31

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Solution

The fourth proportional to 709,971,319.87, 1,065,071,415.07 and 218,684,361.31 is: 328,061,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,971,319.87 : 1,065,071,415.07 = 218,684,361.31 : x
  2. Step 2: Convert to fraction form
    709,971,319.87/1,065,071,415.07 = 218,684,361.31/x
  3. Step 3: Cross multiply
    709,971,319.87x = 1,065,071,415.07 × 218,684,361.31
  4. Step 4: Simplify right side
    709,971,319.87x = 232,914,462,154,120,864
  5. Step 5: Solve for x
    x = 232,914,462,154,120,864/709,971,319.87
  6. Step 6: Final answer
    x = 328,061,790.15

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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.