Home / 913,889.80-1,371,162.54-408,408.28

Finding the Fourth Proportional to 913,889.80, 1,371,162.54 and 408,408.28

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Solution

The fourth proportional to 913,889.80, 1,371,162.54 and 408,408.28 is: 612,758.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,889.80 : 1,371,162.54 = 408,408.28 : x
  2. Step 2: Convert to fraction form
    913,889.80/1,371,162.54 = 408,408.28/x
  3. Step 3: Cross multiply
    913,889.80x = 1,371,162.54 × 408,408.28
  4. Step 4: Simplify right side
    913,889.80x = 559,994,134,561.83
  5. Step 5: Solve for x
    x = 559,994,134,561.83/913,889.80
  6. Step 6: Final answer
    x = 612,758.93

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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.