Home / 778,458.36-1,166,984.82-279,705.72

Finding the Fourth Proportional to 778,458.36, 1,166,984.82 and 279,705.72

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Solution

The fourth proportional to 778,458.36, 1,166,984.82 and 279,705.72 is: 419,306.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,458.36 : 1,166,984.82 = 279,705.72 : x
  2. Step 2: Convert to fraction form
    778,458.36/1,166,984.82 = 279,705.72/x
  3. Step 3: Cross multiply
    778,458.36x = 1,166,984.82 × 279,705.72
  4. Step 4: Simplify right side
    778,458.36x = 326,412,329,307.17
  5. Step 5: Solve for x
    x = 326,412,329,307.17/778,458.36
  6. Step 6: Final answer
    x = 419,306.09

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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.