Home / 808,970,813.70-1,213,456,220.55-800,908,656.90

Finding the Fourth Proportional to 808,970,813.70, 1,213,456,220.55 and 800,908,656.90

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Solution

The fourth proportional to 808,970,813.70, 1,213,456,220.55 and 800,908,656.90 is: 1,201,362,985.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,970,813.70 : 1,213,456,220.55 = 800,908,656.90 : x
  2. Step 2: Convert to fraction form
    808,970,813.70/1,213,456,220.55 = 800,908,656.90/x
  3. Step 3: Cross multiply
    808,970,813.70x = 1,213,456,220.55 × 800,908,656.90
  4. Step 4: Simplify right side
    808,970,813.70x = 971,867,591,807,650,560
  5. Step 5: Solve for x
    x = 971,867,591,807,650,560/808,970,813.70
  6. Step 6: Final answer
    x = 1,201,362,985.35

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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.