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Finding the Fourth Proportional to 457,649.46, 630,856.26 and 321,300.90

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Solution

The fourth proportional to 457,649.46, 630,856.26 and 321,300.90 is: 442,903.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,649.46 : 630,856.26 = 321,300.90 : x
  2. Step 2: Convert to fraction form
    457,649.46/630,856.26 = 321,300.90/x
  3. Step 3: Cross multiply
    457,649.46x = 630,856.26 × 321,300.90
  4. Step 4: Simplify right side
    457,649.46x = 202,694,684,108.63
  5. Step 5: Solve for x
    x = 202,694,684,108.63/457,649.46
  6. Step 6: Final answer
    x = 442,903.80

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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.