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Finding the Fourth Proportional to 518,688.48, 776,629.80 and 268,845.60

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Solution

The fourth proportional to 518,688.48, 776,629.80 and 268,845.60 is: 402,541.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,688.48 : 776,629.80 = 268,845.60 : x
  2. Step 2: Convert to fraction form
    518,688.48/776,629.80 = 268,845.60/x
  3. Step 3: Cross multiply
    518,688.48x = 776,629.80 × 268,845.60
  4. Step 4: Simplify right side
    518,688.48x = 208,793,504,558.88
  5. Step 5: Solve for x
    x = 208,793,504,558.88/518,688.48
  6. Step 6: Final answer
    x = 402,541.24

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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.