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Finding the Fourth Proportional to 1,174,579.55, 1,621,073.91 and 665,299.07

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Solution

The fourth proportional to 1,174,579.55, 1,621,073.91 and 665,299.07 is: 918,200.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,579.55 : 1,621,073.91 = 665,299.07 : x
  2. Step 2: Convert to fraction form
    1,174,579.55/1,621,073.91 = 665,299.07/x
  3. Step 3: Cross multiply
    1,174,579.55x = 1,621,073.91 × 665,299.07
  4. Step 4: Simplify right side
    1,174,579.55x = 1,078,498,953,292.40
  5. Step 5: Solve for x
    x = 1,078,498,953,292.40/1,174,579.55
  6. Step 6: Final answer
    x = 918,200.01

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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.