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Finding the Fourth Proportional to 455,354.81, 628,947.61 and 341,144.20

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Solution

The fourth proportional to 455,354.81, 628,947.61 and 341,144.20 is: 471,197.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,354.81 : 628,947.61 = 341,144.20 : x
  2. Step 2: Convert to fraction form
    455,354.81/628,947.61 = 341,144.20/x
  3. Step 3: Cross multiply
    455,354.81x = 628,947.61 × 341,144.20
  4. Step 4: Simplify right side
    455,354.81x = 214,561,826,830.13
  5. Step 5: Solve for x
    x = 214,561,826,830.13/455,354.81
  6. Step 6: Final answer
    x = 471,197.02

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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.