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Finding the Fourth Proportional to 404,611,154.34, 606,865,537.62 and 128,265,032.22

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Solution

The fourth proportional to 404,611,154.34, 606,865,537.62 and 128,265,032.22 is: 192,381,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,611,154.34 : 606,865,537.62 = 128,265,032.22 : x
  2. Step 2: Convert to fraction form
    404,611,154.34/606,865,537.62 = 128,265,032.22/x
  3. Step 3: Cross multiply
    404,611,154.34x = 606,865,537.62 × 128,265,032.22
  4. Step 4: Simplify right side
    404,611,154.34x = 77,839,627,736,036,928
  5. Step 5: Solve for x
    x = 77,839,627,736,036,928/404,611,154.34
  6. Step 6: Final answer
    x = 192,381,319.45

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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.