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Finding the Fourth Proportional to 520,822.26, 718,801.02 and 291,392.46

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Solution

The fourth proportional to 520,822.26, 718,801.02 and 291,392.46 is: 402,158.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,822.26 : 718,801.02 = 291,392.46 : x
  2. Step 2: Convert to fraction form
    520,822.26/718,801.02 = 291,392.46/x
  3. Step 3: Cross multiply
    520,822.26x = 718,801.02 × 291,392.46
  4. Step 4: Simplify right side
    520,822.26x = 209,453,197,468.31
  5. Step 5: Solve for x
    x = 209,453,197,468.31/520,822.26
  6. Step 6: Final answer
    x = 402,158.69

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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.