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Finding the Fourth Proportional to 667,668.53, 920,880.28 and 463,719.71

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Solution

The fourth proportional to 667,668.53, 920,880.28 and 463,719.71 is: 639,584.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,668.53 : 920,880.28 = 463,719.71 : x
  2. Step 2: Convert to fraction form
    667,668.53/920,880.28 = 463,719.71/x
  3. Step 3: Cross multiply
    667,668.53x = 920,880.28 × 463,719.71
  4. Step 4: Simplify right side
    667,668.53x = 427,030,336,386.32
  5. Step 5: Solve for x
    x = 427,030,336,386.32/667,668.53
  6. Step 6: Final answer
    x = 639,584.34

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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.