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Finding the Fourth Proportional to 808,487.10, 1,212,730.65 and 630,027.90

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Solution

The fourth proportional to 808,487.10, 1,212,730.65 and 630,027.90 is: 945,041.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,487.10 : 1,212,730.65 = 630,027.90 : x
  2. Step 2: Convert to fraction form
    808,487.10/1,212,730.65 = 630,027.90/x
  3. Step 3: Cross multiply
    808,487.10x = 1,212,730.65 × 630,027.90
  4. Step 4: Simplify right side
    808,487.10x = 764,054,144,685.14
  5. Step 5: Solve for x
    x = 764,054,144,685.14/808,487.10
  6. Step 6: Final answer
    x = 945,041.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.