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Finding the Fourth Proportional to 640,975.36, 961,056 and 341,271.04

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Solution

The fourth proportional to 640,975.36, 961,056 and 341,271.04 is: 511,689.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,975.36 : 961,056 = 341,271.04 : x
  2. Step 2: Convert to fraction form
    640,975.36/961,056 = 341,271.04/x
  3. Step 3: Cross multiply
    640,975.36x = 961,056 × 341,271.04
  4. Step 4: Simplify right side
    640,975.36x = 327,980,580,618.24
  5. Step 5: Solve for x
    x = 327,980,580,618.24/640,975.36
  6. Step 6: Final answer
    x = 511,689.84

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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.