Home / 1,215,886.77-1,678,010.57-672,010.87

Finding the Fourth Proportional to 1,215,886.77, 1,678,010.57 and 672,010.87

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Solution

The fourth proportional to 1,215,886.77, 1,678,010.57 and 672,010.87 is: 927,422.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,886.77 : 1,678,010.57 = 672,010.87 : x
  2. Step 2: Convert to fraction form
    1,215,886.77/1,678,010.57 = 672,010.87/x
  3. Step 3: Cross multiply
    1,215,886.77x = 1,678,010.57 × 672,010.87
  4. Step 4: Simplify right side
    1,215,886.77x = 1,127,641,343,014.90
  5. Step 5: Solve for x
    x = 1,127,641,343,014.90/1,215,886.77
  6. Step 6: Final answer
    x = 927,422.99

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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.