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Finding the Fourth Proportional to 464,741.94, 640,149 and 328,541.64

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Solution

The fourth proportional to 464,741.94, 640,149 and 328,541.64 is: 452,542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,741.94 : 640,149 = 328,541.64 : x
  2. Step 2: Convert to fraction form
    464,741.94/640,149 = 328,541.64/x
  3. Step 3: Cross multiply
    464,741.94x = 640,149 × 328,541.64
  4. Step 4: Simplify right side
    464,741.94x = 210,315,602,304.36
  5. Step 5: Solve for x
    x = 210,315,602,304.36/464,741.94
  6. Step 6: Final answer
    x = 452,542.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.