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Finding the Fourth Proportional to 531,443,207.80, 797,164,811.70 and 489,353,080.60

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Solution

The fourth proportional to 531,443,207.80, 797,164,811.70 and 489,353,080.60 is: 734,029,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,443,207.80 : 797,164,811.70 = 489,353,080.60 : x
  2. Step 2: Convert to fraction form
    531,443,207.80/797,164,811.70 = 489,353,080.60/x
  3. Step 3: Cross multiply
    531,443,207.80x = 797,164,811.70 × 489,353,080.60
  4. Step 4: Simplify right side
    531,443,207.80x = 390,095,056,351,313,984
  5. Step 5: Solve for x
    x = 390,095,056,351,313,984/531,443,207.80
  6. Step 6: Final answer
    x = 734,029,620.90

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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.