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Finding the Fourth Proportional to 848,751,947.80, 1,273,127,921.70 and 808,575,008.20

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Solution

The fourth proportional to 848,751,947.80, 1,273,127,921.70 and 808,575,008.20 is: 1,212,862,512.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    848,751,947.80 : 1,273,127,921.70 = 808,575,008.20 : x
  2. Step 2: Convert to fraction form
    848,751,947.80/1,273,127,921.70 = 808,575,008.20/x
  3. Step 3: Cross multiply
    848,751,947.80x = 1,273,127,921.70 × 808,575,008.20
  4. Step 4: Simplify right side
    848,751,947.80x = 1,029,419,419,728,226,560
  5. Step 5: Solve for x
    x = 1,029,419,419,728,226,560/848,751,947.80
  6. Step 6: Final answer
    x = 1,212,862,512.30

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1.5x scale

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.