Home / 494,374.40-681,016.47-421,540.24

Finding the Fourth Proportional to 494,374.40, 681,016.47 and 421,540.24

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Solution

The fourth proportional to 494,374.40, 681,016.47 and 421,540.24 is: 580,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,374.40 : 681,016.47 = 421,540.24 : x
  2. Step 2: Convert to fraction form
    494,374.40/681,016.47 = 421,540.24/x
  3. Step 3: Cross multiply
    494,374.40x = 681,016.47 × 421,540.24
  4. Step 4: Simplify right side
    494,374.40x = 287,075,845,478.25
  5. Step 5: Solve for x
    x = 287,075,845,478.25/494,374.40
  6. Step 6: Final answer
    x = 580,685.10

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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.