Home / 817,485.06-1,225,870.11-412,428.06

Finding the Fourth Proportional to 817,485.06, 1,225,870.11 and 412,428.06

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Solution

The fourth proportional to 817,485.06, 1,225,870.11 and 412,428.06 is: 618,461.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,485.06 : 1,225,870.11 = 412,428.06 : x
  2. Step 2: Convert to fraction form
    817,485.06/1,225,870.11 = 412,428.06/x
  3. Step 3: Cross multiply
    817,485.06x = 1,225,870.11 × 412,428.06
  4. Step 4: Simplify right side
    817,485.06x = 505,583,231,279.29
  5. Step 5: Solve for x
    x = 505,583,231,279.29/817,485.06
  6. Step 6: Final answer
    x = 618,461.74

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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.