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Finding the Fourth Proportional to 659,464.30, 989,455.65 and 260,037.10

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Solution

The fourth proportional to 659,464.30, 989,455.65 and 260,037.10 is: 390,157.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,464.30 : 989,455.65 = 260,037.10 : x
  2. Step 2: Convert to fraction form
    659,464.30/989,455.65 = 260,037.10/x
  3. Step 3: Cross multiply
    659,464.30x = 989,455.65 × 260,037.10
  4. Step 4: Simplify right side
    659,464.30x = 257,295,177,804.62
  5. Step 5: Solve for x
    x = 257,295,177,804.62/659,464.30
  6. Step 6: Final answer
    x = 390,157.86

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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.