Home / 1,318,656.84-1,977,964.44-420,090.90

Finding the Fourth Proportional to 1,318,656.84, 1,977,964.44 and 420,090.90

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Solution

The fourth proportional to 1,318,656.84, 1,977,964.44 and 420,090.90 is: 630,129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,656.84 : 1,977,964.44 = 420,090.90 : x
  2. Step 2: Convert to fraction form
    1,318,656.84/1,977,964.44 = 420,090.90/x
  3. Step 3: Cross multiply
    1,318,656.84x = 1,977,964.44 × 420,090.90
  4. Step 4: Simplify right side
    1,318,656.84x = 830,924,861,767.60
  5. Step 5: Solve for x
    x = 830,924,861,767.60/1,318,656.84
  6. Step 6: Final answer
    x = 630,129.72

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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.