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Finding the Fourth Proportional to 518,122.83, 775,629.04 and 307,652.43

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Solution

The fourth proportional to 518,122.83, 775,629.04 and 307,652.43 is: 460,555.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,122.83 : 775,629.04 = 307,652.43 : x
  2. Step 2: Convert to fraction form
    518,122.83/775,629.04 = 307,652.43/x
  3. Step 3: Cross multiply
    518,122.83x = 775,629.04 × 307,652.43
  4. Step 4: Simplify right side
    518,122.83x = 238,624,153,518.16
  5. Step 5: Solve for x
    x = 238,624,153,518.16/518,122.83
  6. Step 6: Final answer
    x = 460,555.18

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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.