Home / 878,011,851.22-1,211,732,981.15-481,611,454.38

Finding the Fourth Proportional to 878,011,851.22, 1,211,732,981.15 and 481,611,454.38

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Solution

The fourth proportional to 878,011,851.22, 1,211,732,981.15 and 481,611,454.38 is: 664,665,838.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,011,851.22 : 1,211,732,981.15 = 481,611,454.38 : x
  2. Step 2: Convert to fraction form
    878,011,851.22/1,211,732,981.15 = 481,611,454.38/x
  3. Step 3: Cross multiply
    878,011,851.22x = 1,211,732,981.15 × 481,611,454.38
  4. Step 4: Simplify right side
    878,011,851.22x = 583,584,483,363,397,888
  5. Step 5: Solve for x
    x = 583,584,483,363,397,888/878,011,851.22
  6. Step 6: Final answer
    x = 664,665,838.57

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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.