Home / 829,085.80-1,243,628.70-630,020.20

Finding the Fourth Proportional to 829,085.80, 1,243,628.70 and 630,020.20

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Solution

The fourth proportional to 829,085.80, 1,243,628.70 and 630,020.20 is: 945,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    829,085.80 : 1,243,628.70 = 630,020.20 : x
  2. Step 2: Convert to fraction form
    829,085.80/1,243,628.70 = 630,020.20/x
  3. Step 3: Cross multiply
    829,085.80x = 1,243,628.70 × 630,020.20
  4. Step 4: Simplify right side
    829,085.80x = 783,511,202,299.74
  5. Step 5: Solve for x
    x = 783,511,202,299.74/829,085.80
  6. Step 6: Final answer
    x = 945,030.30

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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.