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Finding the Fourth Proportional to 483,059.40, 724,718.70 and 430,830.60

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Solution

The fourth proportional to 483,059.40, 724,718.70 and 430,830.60 is: 646,361.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,059.40 : 724,718.70 = 430,830.60 : x
  2. Step 2: Convert to fraction form
    483,059.40/724,718.70 = 430,830.60/x
  3. Step 3: Cross multiply
    483,059.40x = 724,718.70 × 430,830.60
  4. Step 4: Simplify right side
    483,059.40x = 312,230,992,352.22
  5. Step 5: Solve for x
    x = 312,230,992,352.22/483,059.40
  6. Step 6: Final answer
    x = 646,361.49

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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.