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Finding the Fourth Proportional to 520,613.64, 718,387.62 and 294,258.60

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Solution

The fourth proportional to 520,613.64, 718,387.62 and 294,258.60 is: 406,043.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,613.64 : 718,387.62 = 294,258.60 : x
  2. Step 2: Convert to fraction form
    520,613.64/718,387.62 = 294,258.60/x
  3. Step 3: Cross multiply
    520,613.64x = 718,387.62 × 294,258.60
  4. Step 4: Simplify right side
    520,613.64x = 211,391,735,318.53
  5. Step 5: Solve for x
    x = 211,391,735,318.53/520,613.64
  6. Step 6: Final answer
    x = 406,043.41

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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.