Home / 913,890.80-1,371,164.04-408,409.28

Finding the Fourth Proportional to 913,890.80, 1,371,164.04 and 408,409.28

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Solution

The fourth proportional to 913,890.80, 1,371,164.04 and 408,409.28 is: 612,760.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,890.80 : 1,371,164.04 = 408,409.28 : x
  2. Step 2: Convert to fraction form
    913,890.80/1,371,164.04 = 408,409.28/x
  3. Step 3: Cross multiply
    913,890.80x = 1,371,164.04 × 408,409.28
  4. Step 4: Simplify right side
    913,890.80x = 559,996,118,338.29
  5. Step 5: Solve for x
    x = 559,996,118,338.29/913,890.80
  6. Step 6: Final answer
    x = 612,760.43

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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.