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Finding the Fourth Proportional to 520,562.51, 718,372.22 and 291,120.15

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Solution

The fourth proportional to 520,562.51, 718,372.22 and 291,120.15 is: 401,743.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,562.51 : 718,372.22 = 291,120.15 : x
  2. Step 2: Convert to fraction form
    520,562.51/718,372.22 = 291,120.15/x
  3. Step 3: Cross multiply
    520,562.51x = 718,372.22 × 291,120.15
  4. Step 4: Simplify right side
    520,562.51x = 209,132,626,986.63
  5. Step 5: Solve for x
    x = 209,132,626,986.63/520,562.51
  6. Step 6: Final answer
    x = 401,743.55

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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.