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Finding the Fourth Proportional to 611,491.95, 843,830.73 and 339,577.25

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Solution

The fourth proportional to 611,491.95, 843,830.73 and 339,577.25 is: 468,600.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,491.95 : 843,830.73 = 339,577.25 : x
  2. Step 2: Convert to fraction form
    611,491.95/843,830.73 = 339,577.25/x
  3. Step 3: Cross multiply
    611,491.95x = 843,830.73 × 339,577.25
  4. Step 4: Simplify right side
    611,491.95x = 286,545,714,539.74
  5. Step 5: Solve for x
    x = 286,545,714,539.74/611,491.95
  6. Step 6: Final answer
    x = 468,600.96

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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.