Home / 1,242,705.42-1,715,422.08-783,728.64

Finding the Fourth Proportional to 1,242,705.42, 1,715,422.08 and 783,728.64

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Solution

The fourth proportional to 1,242,705.42, 1,715,422.08 and 783,728.64 is: 1,081,853.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,705.42 : 1,715,422.08 = 783,728.64 : x
  2. Step 2: Convert to fraction form
    1,242,705.42/1,715,422.08 = 783,728.64/x
  3. Step 3: Cross multiply
    1,242,705.42x = 1,715,422.08 × 783,728.64
  4. Step 4: Simplify right side
    1,242,705.42x = 1,344,425,413,784.37
  5. Step 5: Solve for x
    x = 1,344,425,413,784.37/1,242,705.42
  6. Step 6: Final answer
    x = 1,081,853.67

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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.