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Finding the Fourth Proportional to 455,473.89, 628,739.24 and 294,342.21

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Solution

The fourth proportional to 455,473.89, 628,739.24 and 294,342.21 is: 406,311.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,473.89 : 628,739.24 = 294,342.21 : x
  2. Step 2: Convert to fraction form
    455,473.89/628,739.24 = 294,342.21/x
  3. Step 3: Cross multiply
    455,473.89x = 628,739.24 × 294,342.21
  4. Step 4: Simplify right side
    455,473.89x = 185,064,495,943.61
  5. Step 5: Solve for x
    x = 185,064,495,943.61/455,473.89
  6. Step 6: Final answer
    x = 406,311.98

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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.