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Finding the Fourth Proportional to 665,495.56, 998,325.78 and 260,635.24

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Solution

The fourth proportional to 665,495.56, 998,325.78 and 260,635.24 is: 390,985.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,495.56 : 998,325.78 = 260,635.24 : x
  2. Step 2: Convert to fraction form
    665,495.56/998,325.78 = 260,635.24/x
  3. Step 3: Cross multiply
    665,495.56x = 998,325.78 × 260,635.24
  4. Step 4: Simplify right side
    665,495.56x = 260,198,879,268.49
  5. Step 5: Solve for x
    x = 260,198,879,268.49/665,495.56
  6. Step 6: Final answer
    x = 390,985.15

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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.