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Finding the Fourth Proportional to 520,682.90, 718,532.82 and 294,328.40

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Solution

The fourth proportional to 520,682.90, 718,532.82 and 294,328.40 is: 406,167.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,682.90 : 718,532.82 = 294,328.40 : x
  2. Step 2: Convert to fraction form
    520,682.90/718,532.82 = 294,328.40/x
  3. Step 3: Cross multiply
    520,682.90x = 718,532.82 × 294,328.40
  4. Step 4: Simplify right side
    520,682.90x = 211,484,615,258.09
  5. Step 5: Solve for x
    x = 211,484,615,258.09/520,682.90
  6. Step 6: Final answer
    x = 406,167.78

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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.