Home / 515,823.12-711,802.08-300,928.50

Finding the Fourth Proportional to 515,823.12, 711,802.08 and 300,928.50

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Solution

The fourth proportional to 515,823.12, 711,802.08 and 300,928.50 is: 415,261.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,823.12 : 711,802.08 = 300,928.50 : x
  2. Step 2: Convert to fraction form
    515,823.12/711,802.08 = 300,928.50/x
  3. Step 3: Cross multiply
    515,823.12x = 711,802.08 × 300,928.50
  4. Step 4: Simplify right side
    515,823.12x = 214,201,532,231.28
  5. Step 5: Solve for x
    x = 214,201,532,231.28/515,823.12
  6. Step 6: Final answer
    x = 415,261.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.