Home / 1,226,305.15-1,690,853.59-839,307.31

Finding the Fourth Proportional to 1,226,305.15, 1,690,853.59 and 839,307.31

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Solution

The fourth proportional to 1,226,305.15, 1,690,853.59 and 839,307.31 is: 1,157,253.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,305.15 : 1,690,853.59 = 839,307.31 : x
  2. Step 2: Convert to fraction form
    1,226,305.15/1,690,853.59 = 839,307.31/x
  3. Step 3: Cross multiply
    1,226,305.15x = 1,690,853.59 × 839,307.31
  4. Step 4: Simplify right side
    1,226,305.15x = 1,419,145,778,226.74
  5. Step 5: Solve for x
    x = 1,419,145,778,226.74/1,226,305.15
  6. Step 6: Final answer
    x = 1,157,253.38

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Double scale
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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.