Home / 1,296,261.80-1,944,392.70-821,407.40

Finding the Fourth Proportional to 1,296,261.80, 1,944,392.70 and 821,407.40

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Solution

The fourth proportional to 1,296,261.80, 1,944,392.70 and 821,407.40 is: 1,232,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,261.80 : 1,944,392.70 = 821,407.40 : x
  2. Step 2: Convert to fraction form
    1,296,261.80/1,944,392.70 = 821,407.40/x
  3. Step 3: Cross multiply
    1,296,261.80x = 1,944,392.70 × 821,407.40
  4. Step 4: Simplify right side
    1,296,261.80x = 1,597,138,552,285.98
  5. Step 5: Solve for x
    x = 1,597,138,552,285.98/1,296,261.80
  6. Step 6: Final answer
    x = 1,232,111.10

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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.