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Finding the Fourth Proportional to 458,156.65, 630,014.15 and 397,622.20

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Solution

The fourth proportional to 458,156.65, 630,014.15 and 397,622.20 is: 546,772.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,156.65 : 630,014.15 = 397,622.20 : x
  2. Step 2: Convert to fraction form
    458,156.65/630,014.15 = 397,622.20/x
  3. Step 3: Cross multiply
    458,156.65x = 630,014.15 × 397,622.20
  4. Step 4: Simplify right side
    458,156.65x = 250,507,608,790.98
  5. Step 5: Solve for x
    x = 250,507,608,790.98/458,156.65
  6. Step 6: Final answer
    x = 546,772.83

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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.