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Finding the Fourth Proportional to 789,113,221.22, 1,088,978,363.18 and 436,713,513.14

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Solution

The fourth proportional to 789,113,221.22, 1,088,978,363.18 and 436,713,513.14 is: 602,665,820.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,113,221.22 : 1,088,978,363.18 = 436,713,513.14 : x
  2. Step 2: Convert to fraction form
    789,113,221.22/1,088,978,363.18 = 436,713,513.14/x
  3. Step 3: Cross multiply
    789,113,221.22x = 1,088,978,363.18 × 436,713,513.14
  4. Step 4: Simplify right side
    789,113,221.22x = 475,571,566,710,156,160
  5. Step 5: Solve for x
    x = 475,571,566,710,156,160/789,113,221.22
  6. Step 6: Final answer
    x = 602,665,820.22

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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.