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Finding the Fourth Proportional to 520,668.38, 718,502.73 and 294,318.74

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Solution

The fourth proportional to 520,668.38, 718,502.73 and 294,318.74 is: 406,148.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,668.38 : 718,502.73 = 294,318.74 : x
  2. Step 2: Convert to fraction form
    520,668.38/718,502.73 = 294,318.74/x
  3. Step 3: Cross multiply
    520,668.38x = 718,502.73 × 294,318.74
  4. Step 4: Simplify right side
    520,668.38x = 211,468,818,180.16
  5. Step 5: Solve for x
    x = 211,468,818,180.16/520,668.38
  6. Step 6: Final answer
    x = 406,148.76

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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.