Home / 318,913,618.20-478,370,427.30-312,867,000.60

Finding the Fourth Proportional to 318,913,618.20, 478,370,427.30 and 312,867,000.60

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Solution

The fourth proportional to 318,913,618.20, 478,370,427.30 and 312,867,000.60 is: 469,300,500.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,913,618.20 : 478,370,427.30 = 312,867,000.60 : x
  2. Step 2: Convert to fraction form
    318,913,618.20/478,370,427.30 = 312,867,000.60/x
  3. Step 3: Cross multiply
    318,913,618.20x = 478,370,427.30 × 312,867,000.60
  4. Step 4: Simplify right side
    318,913,618.20x = 149,666,320,765,091,360
  5. Step 5: Solve for x
    x = 149,666,320,765,091,360/318,913,618.20
  6. Step 6: Final answer
    x = 469,300,500.90

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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.