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Finding the Fourth Proportional to 520,470.72, 718,230.96 and 294,111.36

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Solution

The fourth proportional to 520,470.72, 718,230.96 and 294,111.36 is: 405,863.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,470.72 : 718,230.96 = 294,111.36 : x
  2. Step 2: Convert to fraction form
    520,470.72/718,230.96 = 294,111.36/x
  3. Step 3: Cross multiply
    520,470.72x = 718,230.96 × 294,111.36
  4. Step 4: Simplify right side
    520,470.72x = 211,239,884,439.71
  5. Step 5: Solve for x
    x = 211,239,884,439.71/520,470.72
  6. Step 6: Final answer
    x = 405,863.15

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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.