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Finding the Fourth Proportional to 488,739.80, 733,765.80 and 312,030.20

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Solution

The fourth proportional to 488,739.80, 733,765.80 and 312,030.20 is: 468,464.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,739.80 : 733,765.80 = 312,030.20 : x
  2. Step 2: Convert to fraction form
    488,739.80/733,765.80 = 312,030.20/x
  3. Step 3: Cross multiply
    488,739.80x = 733,765.80 × 312,030.20
  4. Step 4: Simplify right side
    488,739.80x = 228,957,089,327.16
  5. Step 5: Solve for x
    x = 228,957,089,327.16/488,739.80
  6. Step 6: Final answer
    x = 468,464.18

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1.5x scale

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.