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Finding the Fourth Proportional to 455,538.40, 628,595.20 and 264,514.40

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Solution

The fourth proportional to 455,538.40, 628,595.20 and 264,514.40 is: 365,002.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,538.40 : 628,595.20 = 264,514.40 : x
  2. Step 2: Convert to fraction form
    455,538.40/628,595.20 = 264,514.40/x
  3. Step 3: Cross multiply
    455,538.40x = 628,595.20 × 264,514.40
  4. Step 4: Simplify right side
    455,538.40x = 166,272,482,170.88
  5. Step 5: Solve for x
    x = 166,272,482,170.88/455,538.40
  6. Step 6: Final answer
    x = 365,002.12

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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.