Home / 830,401.80-1,245,602.70-269,436.30

Finding the Fourth Proportional to 830,401.80, 1,245,602.70 and 269,436.30

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Solution

The fourth proportional to 830,401.80, 1,245,602.70 and 269,436.30 is: 404,154.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,401.80 : 1,245,602.70 = 269,436.30 : x
  2. Step 2: Convert to fraction form
    830,401.80/1,245,602.70 = 269,436.30/x
  3. Step 3: Cross multiply
    830,401.80x = 1,245,602.70 × 269,436.30
  4. Step 4: Simplify right side
    830,401.80x = 335,610,582,758.01
  5. Step 5: Solve for x
    x = 335,610,582,758.01/830,401.80
  6. Step 6: Final answer
    x = 404,154.45

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Double scale
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Similar ratio
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1.5x scale

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.