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Finding the Fourth Proportional to 1,090,936,829.80, 1,636,405,244.70 and 763,781,750.20

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Solution

The fourth proportional to 1,090,936,829.80, 1,636,405,244.70 and 763,781,750.20 is: 1,145,672,625.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,936,829.80 : 1,636,405,244.70 = 763,781,750.20 : x
  2. Step 2: Convert to fraction form
    1,090,936,829.80/1,636,405,244.70 = 763,781,750.20/x
  3. Step 3: Cross multiply
    1,090,936,829.80x = 1,636,405,244.70 × 763,781,750.20
  4. Step 4: Simplify right side
    1,090,936,829.80x = 1,249,856,461,833,425,408
  5. Step 5: Solve for x
    x = 1,249,856,461,833,425,408/1,090,936,829.80
  6. Step 6: Final answer
    x = 1,145,672,625.30

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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.