Home / 788,421.48-1,183,516.74-315,436.56

Finding the Fourth Proportional to 788,421.48, 1,183,516.74 and 315,436.56

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Solution

The fourth proportional to 788,421.48, 1,183,516.74 and 315,436.56 is: 473,508.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,421.48 : 1,183,516.74 = 315,436.56 : x
  2. Step 2: Convert to fraction form
    788,421.48/1,183,516.74 = 315,436.56/x
  3. Step 3: Cross multiply
    788,421.48x = 1,183,516.74 × 315,436.56
  4. Step 4: Simplify right side
    788,421.48x = 373,324,449,168.01
  5. Step 5: Solve for x
    x = 373,324,449,168.01/788,421.48
  6. Step 6: Final answer
    x = 473,508.72

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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.