Home / 778,461.36-1,166,989.32-279,708.72

Finding the Fourth Proportional to 778,461.36, 1,166,989.32 and 279,708.72

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Solution

The fourth proportional to 778,461.36, 1,166,989.32 and 279,708.72 is: 419,310.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,461.36 : 1,166,989.32 = 279,708.72 : x
  2. Step 2: Convert to fraction form
    778,461.36/1,166,989.32 = 279,708.72/x
  3. Step 3: Cross multiply
    778,461.36x = 1,166,989.32 × 279,708.72
  4. Step 4: Simplify right side
    778,461.36x = 326,417,088,950.87
  5. Step 5: Solve for x
    x = 326,417,088,950.87/778,461.36
  6. Step 6: Final answer
    x = 419,310.59

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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.