Home / 1,209,491,961.40-1,814,573,865.30-519,729,657.40

Finding the Fourth Proportional to 1,209,491,961.40, 1,814,573,865.30 and 519,729,657.40

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Solution

The fourth proportional to 1,209,491,961.40, 1,814,573,865.30 and 519,729,657.40 is: 779,738,835.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,491,961.40 : 1,814,573,865.30 = 519,729,657.40 : x
  2. Step 2: Convert to fraction form
    1,209,491,961.40/1,814,573,865.30 = 519,729,657.40/x
  3. Step 3: Cross multiply
    1,209,491,961.40x = 1,814,573,865.30 × 519,729,657.40
  4. Step 4: Simplify right side
    1,209,491,961.40x = 943,087,853,339,362,688
  5. Step 5: Solve for x
    x = 943,087,853,339,362,688/1,209,491,961.40
  6. Step 6: Final answer
    x = 779,738,835.34

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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.