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Finding the Fourth Proportional to 606,903.20, 910,064 and 286,788.64

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Solution

The fourth proportional to 606,903.20, 910,064 and 286,788.64 is: 430,045.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,903.20 : 910,064 = 286,788.64 : x
  2. Step 2: Convert to fraction form
    606,903.20/910,064 = 286,788.64/x
  3. Step 3: Cross multiply
    606,903.20x = 910,064 × 286,788.64
  4. Step 4: Simplify right side
    606,903.20x = 260,996,016,872.96
  5. Step 5: Solve for x
    x = 260,996,016,872.96/606,903.20
  6. Step 6: Final answer
    x = 430,045.54

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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.