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Finding the Fourth Proportional to 608,779.21, 840,116.29 and 336,858.56

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Solution

The fourth proportional to 608,779.21, 840,116.29 and 336,858.56 is: 464,865.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,779.21 : 840,116.29 = 336,858.56 : x
  2. Step 2: Convert to fraction form
    608,779.21/840,116.29 = 336,858.56/x
  3. Step 3: Cross multiply
    608,779.21x = 840,116.29 × 336,858.56
  4. Step 4: Simplify right side
    608,779.21x = 283,000,362,892.12
  5. Step 5: Solve for x
    x = 283,000,362,892.12/608,779.21
  6. Step 6: Final answer
    x = 464,865.36

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1.5x scale

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.