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Finding the Fourth Proportional to 1,978,386.08, 2,967,888 and 630,850.72

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Solution

The fourth proportional to 1,978,386.08, 2,967,888 and 630,850.72 is: 946,374.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,386.08 : 2,967,888 = 630,850.72 : x
  2. Step 2: Convert to fraction form
    1,978,386.08/2,967,888 = 630,850.72/x
  3. Step 3: Cross multiply
    1,978,386.08x = 2,967,888 × 630,850.72
  4. Step 4: Simplify right side
    1,978,386.08x = 1,872,294,281,679.36
  5. Step 5: Solve for x
    x = 1,872,294,281,679.36/1,978,386.08
  6. Step 6: Final answer
    x = 946,374.57

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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.