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Finding the Fourth Proportional to 570,762.44, 787,621.70 and 312,626.04

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Solution

The fourth proportional to 570,762.44, 787,621.70 and 312,626.04 is: 431,407.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,762.44 : 787,621.70 = 312,626.04 : x
  2. Step 2: Convert to fraction form
    570,762.44/787,621.70 = 312,626.04/x
  3. Step 3: Cross multiply
    570,762.44x = 787,621.70 × 312,626.04
  4. Step 4: Simplify right side
    570,762.44x = 246,231,051,525.94
  5. Step 5: Solve for x
    x = 246,231,051,525.94/570,762.44
  6. Step 6: Final answer
    x = 431,407.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.