Home / 1,218,881.01-1,682,335.74-811,000.05

Finding the Fourth Proportional to 1,218,881.01, 1,682,335.74 and 811,000.05

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Solution

The fourth proportional to 1,218,881.01, 1,682,335.74 and 811,000.05 is: 1,119,366.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,881.01 : 1,682,335.74 = 811,000.05 : x
  2. Step 2: Convert to fraction form
    1,218,881.01/1,682,335.74 = 811,000.05/x
  3. Step 3: Cross multiply
    1,218,881.01x = 1,682,335.74 × 811,000.05
  4. Step 4: Simplify right side
    1,218,881.01x = 1,364,374,369,256.79
  5. Step 5: Solve for x
    x = 1,364,374,369,256.79/1,218,881.01
  6. Step 6: Final answer
    x = 1,119,366.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.