Home / 808,703,947.20-1,213,055,920.80-291,214,257.60

Finding the Fourth Proportional to 808,703,947.20, 1,213,055,920.80 and 291,214,257.60

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Solution

The fourth proportional to 808,703,947.20, 1,213,055,920.80 and 291,214,257.60 is: 436,821,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,703,947.20 : 1,213,055,920.80 = 291,214,257.60 : x
  2. Step 2: Convert to fraction form
    808,703,947.20/1,213,055,920.80 = 291,214,257.60/x
  3. Step 3: Cross multiply
    808,703,947.20x = 1,213,055,920.80 × 291,214,257.60
  4. Step 4: Simplify right side
    808,703,947.20x = 353,259,179,403,056,384
  5. Step 5: Solve for x
    x = 353,259,179,403,056,384/808,703,947.20
  6. Step 6: Final answer
    x = 436,821,386.40

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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.