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Finding the Fourth Proportional to 453,985.70, 680,978.55 and 404,219.30

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Solution

The fourth proportional to 453,985.70, 680,978.55 and 404,219.30 is: 606,328.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,985.70 : 680,978.55 = 404,219.30 : x
  2. Step 2: Convert to fraction form
    453,985.70/680,978.55 = 404,219.30/x
  3. Step 3: Cross multiply
    453,985.70x = 680,978.55 × 404,219.30
  4. Step 4: Simplify right side
    453,985.70x = 275,264,672,796.02
  5. Step 5: Solve for x
    x = 275,264,672,796.02/453,985.70
  6. Step 6: Final answer
    x = 606,328.95

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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.