Home / 880,990.50-1,215,663.75-518,334.60

Finding the Fourth Proportional to 880,990.50, 1,215,663.75 and 518,334.60

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Solution

The fourth proportional to 880,990.50, 1,215,663.75 and 518,334.60 is: 715,241.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,990.50 : 1,215,663.75 = 518,334.60 : x
  2. Step 2: Convert to fraction form
    880,990.50/1,215,663.75 = 518,334.60/x
  3. Step 3: Cross multiply
    880,990.50x = 1,215,663.75 × 518,334.60
  4. Step 4: Simplify right side
    880,990.50x = 630,120,583,590.75
  5. Step 5: Solve for x
    x = 630,120,583,590.75/880,990.50
  6. Step 6: Final answer
    x = 715,241.07

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1.5x scale

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.