Home / 420,526.08-630,546.73-287,567.42

Finding the Fourth Proportional to 420,526.08, 630,546.73 and 287,567.42

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Solution

The fourth proportional to 420,526.08, 630,546.73 and 287,567.42 is: 431,185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,526.08 : 630,546.73 = 287,567.42 : x
  2. Step 2: Convert to fraction form
    420,526.08/630,546.73 = 287,567.42/x
  3. Step 3: Cross multiply
    420,526.08x = 630,546.73 × 287,567.42
  4. Step 4: Simplify right side
    420,526.08x = 181,324,692,463.88
  5. Step 5: Solve for x
    x = 181,324,692,463.88/420,526.08
  6. Step 6: Final answer
    x = 431,185.37

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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.