Home / 8,290,590.30-12,445,216.65-6,405,687.90

Finding the Fourth Proportional to 8,290,590.30, 12,445,216.65 and 6,405,687.90

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Solution

The fourth proportional to 8,290,590.30, 12,445,216.65 and 6,405,687.90 is: 9,615,741.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290,590.30 : 12,445,216.65 = 6,405,687.90 : x
  2. Step 2: Convert to fraction form
    8,290,590.30/12,445,216.65 = 6,405,687.90/x
  3. Step 3: Cross multiply
    8,290,590.30x = 12,445,216.65 × 6,405,687.90
  4. Step 4: Simplify right side
    8,290,590.30x = 79,720,173,707,783.55
  5. Step 5: Solve for x
    x = 79,720,173,707,783.55/8,290,590.30
  6. Step 6: Final answer
    x = 9,615,741.56

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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.