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Finding the Fourth Proportional to 1,220,141,136.50, 1,683,978,824.48 and 744,107,676.95

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Solution

The fourth proportional to 1,220,141,136.50, 1,683,978,824.48 and 744,107,676.95 is: 1,026,980,841.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,141,136.50 : 1,683,978,824.48 = 744,107,676.95 : x
  2. Step 2: Convert to fraction form
    1,220,141,136.50/1,683,978,824.48 = 744,107,676.95/x
  3. Step 3: Cross multiply
    1,220,141,136.50x = 1,683,978,824.48 × 744,107,676.95
  4. Step 4: Simplify right side
    1,220,141,136.50x = 1,253,061,571,104,664,064
  5. Step 5: Solve for x
    x = 1,253,061,571,104,664,064/1,220,141,136.50
  6. Step 6: Final answer
    x = 1,026,980,841.50

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1.5x scale

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.