Home / 885,774,872.80-1,328,662,309.20-821,277,618.40

Finding the Fourth Proportional to 885,774,872.80, 1,328,662,309.20 and 821,277,618.40

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Solution

The fourth proportional to 885,774,872.80, 1,328,662,309.20 and 821,277,618.40 is: 1,231,916,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,774,872.80 : 1,328,662,309.20 = 821,277,618.40 : x
  2. Step 2: Convert to fraction form
    885,774,872.80/1,328,662,309.20 = 821,277,618.40/x
  3. Step 3: Cross multiply
    885,774,872.80x = 1,328,662,309.20 × 821,277,618.40
  4. Step 4: Simplify right side
    885,774,872.80x = 1,091,200,616,957,620,480
  5. Step 5: Solve for x
    x = 1,091,200,616,957,620,480/885,774,872.80
  6. Step 6: Final answer
    x = 1,231,916,427.60

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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.