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Finding the Fourth Proportional to 456,759.10, 684,220.11 and 256,779.82

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Solution

The fourth proportional to 456,759.10, 684,220.11 and 256,779.82 is: 384,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,759.10 : 684,220.11 = 256,779.82 : x
  2. Step 2: Convert to fraction form
    456,759.10/684,220.11 = 256,779.82/x
  3. Step 3: Cross multiply
    456,759.10x = 684,220.11 × 256,779.82
  4. Step 4: Simplify right side
    456,759.10x = 175,693,916,686.18
  5. Step 5: Solve for x
    x = 175,693,916,686.18/456,759.10
  6. Step 6: Final answer
    x = 384,653.35

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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.