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Finding the Fourth Proportional to 3,779,646.18, 5,669,490.60 and 939,758.64

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Solution

The fourth proportional to 3,779,646.18, 5,669,490.60 and 939,758.64 is: 1,409,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779,646.18 : 5,669,490.60 = 939,758.64 : x
  2. Step 2: Convert to fraction form
    3,779,646.18/5,669,490.60 = 939,758.64/x
  3. Step 3: Cross multiply
    3,779,646.18x = 5,669,490.60 × 939,758.64
  4. Step 4: Simplify right side
    3,779,646.18x = 5,327,952,775,748.78
  5. Step 5: Solve for x
    x = 5,327,952,775,748.78/3,779,646.18
  6. Step 6: Final answer
    x = 1,409,643.26

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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.