Home / 689,936,672.40-1,034,905,008.60-205,262,480.40

Finding the Fourth Proportional to 689,936,672.40, 1,034,905,008.60 and 205,262,480.40

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Solution

The fourth proportional to 689,936,672.40, 1,034,905,008.60 and 205,262,480.40 is: 307,893,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,936,672.40 : 1,034,905,008.60 = 205,262,480.40 : x
  2. Step 2: Convert to fraction form
    689,936,672.40/1,034,905,008.60 = 205,262,480.40/x
  3. Step 3: Cross multiply
    689,936,672.40x = 1,034,905,008.60 × 205,262,480.40
  4. Step 4: Simplify right side
    689,936,672.40x = 212,427,169,043,619,328
  5. Step 5: Solve for x
    x = 212,427,169,043,619,328/689,936,672.40
  6. Step 6: Final answer
    x = 307,893,720.60

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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.