Home / 822,406.40-1,231,766.40-490,630.40

Finding the Fourth Proportional to 822,406.40, 1,231,766.40 and 490,630.40

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Solution

The fourth proportional to 822,406.40, 1,231,766.40 and 490,630.40 is: 734,845.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,406.40 : 1,231,766.40 = 490,630.40 : x
  2. Step 2: Convert to fraction form
    822,406.40/1,231,766.40 = 490,630.40/x
  3. Step 3: Cross multiply
    822,406.40x = 1,231,766.40 × 490,630.40
  4. Step 4: Simplify right side
    822,406.40x = 604,342,041,538.56
  5. Step 5: Solve for x
    x = 604,342,041,538.56/822,406.40
  6. Step 6: Final answer
    x = 734,845.99

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Double scale
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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.