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Finding the Fourth Proportional to 570,419.81, 787,223.06 and 325,409.96

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Solution

The fourth proportional to 570,419.81, 787,223.06 and 325,409.96 is: 449,090.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,419.81 : 787,223.06 = 325,409.96 : x
  2. Step 2: Convert to fraction form
    570,419.81/787,223.06 = 325,409.96/x
  3. Step 3: Cross multiply
    570,419.81x = 787,223.06 × 325,409.96
  4. Step 4: Simplify right side
    570,419.81x = 256,170,224,465.68
  5. Step 5: Solve for x
    x = 256,170,224,465.68/570,419.81
  6. Step 6: Final answer
    x = 449,090.69

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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.