Home / 687,258.72-1,030,473.77-308,110.89

Finding the Fourth Proportional to 687,258.72, 1,030,473.77 and 308,110.89

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Solution

The fourth proportional to 687,258.72, 1,030,473.77 and 308,110.89 is: 461,980.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,258.72 : 1,030,473.77 = 308,110.89 : x
  2. Step 2: Convert to fraction form
    687,258.72/1,030,473.77 = 308,110.89/x
  3. Step 3: Cross multiply
    687,258.72x = 1,030,473.77 × 308,110.89
  4. Step 4: Simplify right side
    687,258.72x = 317,500,188,855.80
  5. Step 5: Solve for x
    x = 317,500,188,855.80/687,258.72
  6. Step 6: Final answer
    x = 461,980.59

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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.