Home / 830,105.80-1,245,158.70-269,140.30

Finding the Fourth Proportional to 830,105.80, 1,245,158.70 and 269,140.30

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Solution

The fourth proportional to 830,105.80, 1,245,158.70 and 269,140.30 is: 403,710.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,105.80 : 1,245,158.70 = 269,140.30 : x
  2. Step 2: Convert to fraction form
    830,105.80/1,245,158.70 = 269,140.30/x
  3. Step 3: Cross multiply
    830,105.80x = 1,245,158.70 × 269,140.30
  4. Step 4: Simplify right side
    830,105.80x = 335,122,386,065.61
  5. Step 5: Solve for x
    x = 335,122,386,065.61/830,105.80
  6. Step 6: Final answer
    x = 403,710.45

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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.