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Finding the Fourth Proportional to 675,286,084.85, 931,992,667.93 and 389,121,937.60

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Solution

The fourth proportional to 675,286,084.85, 931,992,667.93 and 389,121,937.60 is: 537,044,670.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,286,084.85 : 931,992,667.93 = 389,121,937.60 : x
  2. Step 2: Convert to fraction form
    675,286,084.85/931,992,667.93 = 389,121,937.60/x
  3. Step 3: Cross multiply
    675,286,084.85x = 931,992,667.93 × 389,121,937.60
  4. Step 4: Simplify right side
    675,286,084.85x = 362,658,792,773,915,008
  5. Step 5: Solve for x
    x = 362,658,792,773,915,008/675,286,084.85
  6. Step 6: Final answer
    x = 537,044,670.27

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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.