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Finding the Fourth Proportional to 892,608.30, 1,231,798.05 and 490,200.30

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Solution

The fourth proportional to 892,608.30, 1,231,798.05 and 490,200.30 is: 676,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,608.30 : 1,231,798.05 = 490,200.30 : x
  2. Step 2: Convert to fraction form
    892,608.30/1,231,798.05 = 490,200.30/x
  3. Step 3: Cross multiply
    892,608.30x = 1,231,798.05 × 490,200.30
  4. Step 4: Simplify right side
    892,608.30x = 603,827,773,649.42
  5. Step 5: Solve for x
    x = 603,827,773,649.42/892,608.30
  6. Step 6: Final answer
    x = 676,475.64

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Double scale
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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.