Home / 691,309,412.70-1,036,831,408.65-206,651,031.90

Finding the Fourth Proportional to 691,309,412.70, 1,036,831,408.65 and 206,651,031.90

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Solution

The fourth proportional to 691,309,412.70, 1,036,831,408.65 and 206,651,031.90 is: 309,936,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,309,412.70 : 1,036,831,408.65 = 206,651,031.90 : x
  2. Step 2: Convert to fraction form
    691,309,412.70/1,036,831,408.65 = 206,651,031.90/x
  3. Step 3: Cross multiply
    691,309,412.70x = 1,036,831,408.65 × 206,651,031.90
  4. Step 4: Simplify right side
    691,309,412.70x = 214,262,280,503,853,088
  5. Step 5: Solve for x
    x = 214,262,280,503,853,088/691,309,412.70
  6. Step 6: Final answer
    x = 309,936,877.13

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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.