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Finding the Fourth Proportional to 456,758.60, 684,219.34 and 256,779.32

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Solution

The fourth proportional to 456,758.60, 684,219.34 and 256,779.32 is: 384,652.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,758.60 : 684,219.34 = 256,779.32 : x
  2. Step 2: Convert to fraction form
    456,758.60/684,219.34 = 256,779.32/x
  3. Step 3: Cross multiply
    456,758.60x = 684,219.34 × 256,779.32
  4. Step 4: Simplify right side
    456,758.60x = 175,693,376,856.05
  5. Step 5: Solve for x
    x = 175,693,376,856.05/456,758.60
  6. Step 6: Final answer
    x = 384,652.59

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1.5x scale

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.