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Finding the Fourth Proportional to 469,359.76, 704,038.20 and 405,991.40

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Solution

The fourth proportional to 469,359.76, 704,038.20 and 405,991.40 is: 608,985.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,359.76 : 704,038.20 = 405,991.40 : x
  2. Step 2: Convert to fraction form
    469,359.76/704,038.20 = 405,991.40/x
  3. Step 3: Cross multiply
    469,359.76x = 704,038.20 × 405,991.40
  4. Step 4: Simplify right side
    469,359.76x = 285,833,454,471.48
  5. Step 5: Solve for x
    x = 285,833,454,471.48/469,359.76
  6. Step 6: Final answer
    x = 608,985.85

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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.