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Finding the Fourth Proportional to 520,798.51, 718,695.48 and 305,958.16

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Solution

The fourth proportional to 520,798.51, 718,695.48 and 305,958.16 is: 422,218.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,798.51 : 718,695.48 = 305,958.16 : x
  2. Step 2: Convert to fraction form
    520,798.51/718,695.48 = 305,958.16/x
  3. Step 3: Cross multiply
    520,798.51x = 718,695.48 × 305,958.16
  4. Step 4: Simplify right side
    520,798.51x = 219,890,746,661.12
  5. Step 5: Solve for x
    x = 219,890,746,661.12/520,798.51
  6. Step 6: Final answer
    x = 422,218.46

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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.