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Finding the Fourth Proportional to 661,265.64, 990,941.14 and 455,889.50

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Solution

The fourth proportional to 661,265.64, 990,941.14 and 455,889.50 is: 683,174.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,265.64 : 990,941.14 = 455,889.50 : x
  2. Step 2: Convert to fraction form
    661,265.64/990,941.14 = 455,889.50/x
  3. Step 3: Cross multiply
    661,265.64x = 990,941.14 × 455,889.50
  4. Step 4: Simplify right side
    661,265.64x = 451,759,660,844.03
  5. Step 5: Solve for x
    x = 451,759,660,844.03/661,265.64
  6. Step 6: Final answer
    x = 683,174.25

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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.