Home / 687,259.72-1,030,475.26-308,111.89

Finding the Fourth Proportional to 687,259.72, 1,030,475.26 and 308,111.89

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Solution

The fourth proportional to 687,259.72, 1,030,475.26 and 308,111.89 is: 461,982.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,259.72 : 1,030,475.26 = 308,111.89 : x
  2. Step 2: Convert to fraction form
    687,259.72/1,030,475.26 = 308,111.89/x
  3. Step 3: Cross multiply
    687,259.72x = 1,030,475.26 × 308,111.89
  4. Step 4: Simplify right side
    687,259.72x = 317,501,679,956.84
  5. Step 5: Solve for x
    x = 317,501,679,956.84/687,259.72
  6. Step 6: Final answer
    x = 461,982.09

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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.