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Finding the Fourth Proportional to 819,307,211.60, 1,228,960,817.40 and 819,307,211.60

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Solution

The fourth proportional to 819,307,211.60, 1,228,960,817.40 and 819,307,211.60 is: 1,228,960,817.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,307,211.60 : 1,228,960,817.40 = 819,307,211.60 : x
  2. Step 2: Convert to fraction form
    819,307,211.60/1,228,960,817.40 = 819,307,211.60/x
  3. Step 3: Cross multiply
    819,307,211.60x = 1,228,960,817.40 × 819,307,211.60
  4. Step 4: Simplify right side
    819,307,211.60x = 1,006,896,460,469,650,816
  5. Step 5: Solve for x
    x = 1,006,896,460,469,650,816/819,307,211.60
  6. Step 6: Final answer
    x = 1,228,960,817.40

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1.5x scale

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.