Home / 891,090.90-1,229,770.62-509,109.48

Finding the Fourth Proportional to 891,090.90, 1,229,770.62 and 509,109.48

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Solution

The fourth proportional to 891,090.90, 1,229,770.62 and 509,109.48 is: 702,608.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,090.90 : 1,229,770.62 = 509,109.48 : x
  2. Step 2: Convert to fraction form
    891,090.90/1,229,770.62 = 509,109.48/x
  3. Step 3: Cross multiply
    891,090.90x = 1,229,770.62 × 509,109.48
  4. Step 4: Simplify right side
    891,090.90x = 626,087,880,867.48
  5. Step 5: Solve for x
    x = 626,087,880,867.48/891,090.90
  6. Step 6: Final answer
    x = 702,608.32

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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.