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Finding the Fourth Proportional to 570,407.96, 787,163.22 and 312,301.64

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Solution

The fourth proportional to 570,407.96, 787,163.22 and 312,301.64 is: 430,976.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,407.96 : 787,163.22 = 312,301.64 : x
  2. Step 2: Convert to fraction form
    570,407.96/787,163.22 = 312,301.64/x
  3. Step 3: Cross multiply
    570,407.96x = 787,163.22 × 312,301.64
  4. Step 4: Simplify right side
    570,407.96x = 245,832,364,553.68
  5. Step 5: Solve for x
    x = 245,832,364,553.68/570,407.96
  6. Step 6: Final answer
    x = 430,976.39

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1.5x scale

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.