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Finding the Fourth Proportional to 455,430.21, 628,549.10 and 264,443.59

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Solution

The fourth proportional to 455,430.21, 628,549.10 and 264,443.59 is: 364,964.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,430.21 : 628,549.10 = 264,443.59 : x
  2. Step 2: Convert to fraction form
    455,430.21/628,549.10 = 264,443.59/x
  3. Step 3: Cross multiply
    455,430.21x = 628,549.10 × 264,443.59
  4. Step 4: Simplify right side
    455,430.21x = 166,215,780,950.40
  5. Step 5: Solve for x
    x = 166,215,780,950.40/455,430.21
  6. Step 6: Final answer
    x = 364,964.33

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1.5x scale

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.