Home / 1,216,313.72-1,678,779.42-707,309.72

Finding the Fourth Proportional to 1,216,313.72, 1,678,779.42 and 707,309.72

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Solution

The fourth proportional to 1,216,313.72, 1,678,779.42 and 707,309.72 is: 976,242.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,313.72 : 1,678,779.42 = 707,309.72 : x
  2. Step 2: Convert to fraction form
    1,216,313.72/1,678,779.42 = 707,309.72/x
  3. Step 3: Cross multiply
    1,216,313.72x = 1,678,779.42 × 707,309.72
  4. Step 4: Simplify right side
    1,216,313.72x = 1,187,417,001,501.96
  5. Step 5: Solve for x
    x = 1,187,417,001,501.96/1,216,313.72
  6. Step 6: Final answer
    x = 976,242.38

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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.