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Finding the Fourth Proportional to 483,039.90, 724,689.45 and 430,811.10

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Solution

The fourth proportional to 483,039.90, 724,689.45 and 430,811.10 is: 646,332.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,039.90 : 724,689.45 = 430,811.10 : x
  2. Step 2: Convert to fraction form
    483,039.90/724,689.45 = 430,811.10/x
  3. Step 3: Cross multiply
    483,039.90x = 724,689.45 × 430,811.10
  4. Step 4: Simplify right side
    483,039.90x = 312,204,259,112.90
  5. Step 5: Solve for x
    x = 312,204,259,112.90/483,039.90
  6. Step 6: Final answer
    x = 646,332.24

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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.