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Finding the Fourth Proportional to 862,650.36, 1,190,441.42 and 480,668.92

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Solution

The fourth proportional to 862,650.36, 1,190,441.42 and 480,668.92 is: 663,314.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,650.36 : 1,190,441.42 = 480,668.92 : x
  2. Step 2: Convert to fraction form
    862,650.36/1,190,441.42 = 480,668.92/x
  3. Step 3: Cross multiply
    862,650.36x = 1,190,441.42 × 480,668.92
  4. Step 4: Simplify right side
    862,650.36x = 572,208,191,674.67
  5. Step 5: Solve for x
    x = 572,208,191,674.67/862,650.36
  6. Step 6: Final answer
    x = 663,314.15

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.