Home / 780,630.08-1,171,338.72-307,654.40

Finding the Fourth Proportional to 780,630.08, 1,171,338.72 and 307,654.40

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Solution

The fourth proportional to 780,630.08, 1,171,338.72 and 307,654.40 is: 461,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,630.08 : 1,171,338.72 = 307,654.40 : x
  2. Step 2: Convert to fraction form
    780,630.08/1,171,338.72 = 307,654.40/x
  3. Step 3: Cross multiply
    780,630.08x = 1,171,338.72 × 307,654.40
  4. Step 4: Simplify right side
    780,630.08x = 360,367,511,098.37
  5. Step 5: Solve for x
    x = 360,367,511,098.37/780,630.08
  6. Step 6: Final answer
    x = 461,636.72

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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.