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Finding the Fourth Proportional to 455,430.57, 628,549.61 and 264,443.97

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Solution

The fourth proportional to 455,430.57, 628,549.61 and 264,443.97 is: 364,964.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,430.57 : 628,549.61 = 264,443.97 : x
  2. Step 2: Convert to fraction form
    455,430.57/628,549.61 = 264,443.97/x
  3. Step 3: Cross multiply
    455,430.57x = 628,549.61 × 264,443.97
  4. Step 4: Simplify right side
    455,430.57x = 166,216,152,888.13
  5. Step 5: Solve for x
    x = 166,216,152,888.13/455,430.57
  6. Step 6: Final answer
    x = 364,964.86

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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.