Home / 808,640,811.92-1,209,769,746.71-612,469,331.25

Finding the Fourth Proportional to 808,640,811.92, 1,209,769,746.71 and 612,469,331.25

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Solution

The fourth proportional to 808,640,811.92, 1,209,769,746.71 and 612,469,331.25 is: 916,286,757.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,640,811.92 : 1,209,769,746.71 = 612,469,331.25 : x
  2. Step 2: Convert to fraction form
    808,640,811.92/1,209,769,746.71 = 612,469,331.25/x
  3. Step 3: Cross multiply
    808,640,811.92x = 1,209,769,746.71 × 612,469,331.25
  4. Step 4: Simplify right side
    808,640,811.92x = 740,946,867,730,893,184
  5. Step 5: Solve for x
    x = 740,946,867,730,893,184/808,640,811.92
  6. Step 6: Final answer
    x = 916,286,757.75

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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.