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Finding the Fourth Proportional to 529,686, 730,966.68 and 291,222

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Solution

The fourth proportional to 529,686, 730,966.68 and 291,222 is: 401,886.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,686 : 730,966.68 = 291,222 : x
  2. Step 2: Convert to fraction form
    529,686/730,966.68 = 291,222/x
  3. Step 3: Cross multiply
    529,686x = 730,966.68 × 291,222
  4. Step 4: Simplify right side
    529,686x = 212,873,578,482.96
  5. Step 5: Solve for x
    x = 212,873,578,482.96/529,686
  6. Step 6: Final answer
    x = 401,886.36

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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.