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Finding the Fourth Proportional to 718,710, 1,076,999.99 and 291,726.27

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Solution

The fourth proportional to 718,710, 1,076,999.99 and 291,726.27 is: 437,157.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,710 : 1,076,999.99 = 291,726.27 : x
  2. Step 2: Convert to fraction form
    718,710/1,076,999.99 = 291,726.27/x
  3. Step 3: Cross multiply
    718,710x = 1,076,999.99 × 291,726.27
  4. Step 4: Simplify right side
    718,710x = 314,189,188,414.11
  5. Step 5: Solve for x
    x = 314,189,188,414.11/718,710
  6. Step 6: Final answer
    x = 437,157.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.