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Finding the Fourth Proportional to 520,743.94, 718,592.73 and 291,261.47

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Solution

The fourth proportional to 520,743.94, 718,592.73 and 291,261.47 is: 401,921.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,743.94 : 718,592.73 = 291,261.47 : x
  2. Step 2: Convert to fraction form
    520,743.94/718,592.73 = 291,261.47/x
  3. Step 3: Cross multiply
    520,743.94x = 718,592.73 × 291,261.47
  4. Step 4: Simplify right side
    520,743.94x = 209,298,371,278.15
  5. Step 5: Solve for x
    x = 209,298,371,278.15/520,743.94
  6. Step 6: Final answer
    x = 401,921.86

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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.