Home / 1,238,045.51-1,707,777.37-778,431.77

Finding the Fourth Proportional to 1,238,045.51, 1,707,777.37 and 778,431.77

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Solution

The fourth proportional to 1,238,045.51, 1,707,777.37 and 778,431.77 is: 1,073,779.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,045.51 : 1,707,777.37 = 778,431.77 : x
  2. Step 2: Convert to fraction form
    1,238,045.51/1,707,777.37 = 778,431.77/x
  3. Step 3: Cross multiply
    1,238,045.51x = 1,707,777.37 × 778,431.77
  4. Step 4: Simplify right side
    1,238,045.51x = 1,329,388,159,733.36
  5. Step 5: Solve for x
    x = 1,329,388,159,733.36/1,238,045.51
  6. Step 6: Final answer
    x = 1,073,779.72

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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.