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Finding the Fourth Proportional to 570,501.57, 787,289.28 and 312,373.83

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Solution

The fourth proportional to 570,501.57, 787,289.28 and 312,373.83 is: 431,074.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,501.57 : 787,289.28 = 312,373.83 : x
  2. Step 2: Convert to fraction form
    570,501.57/787,289.28 = 312,373.83/x
  3. Step 3: Cross multiply
    570,501.57x = 787,289.28 × 312,373.83
  4. Step 4: Simplify right side
    570,501.57x = 245,928,568,367.48
  5. Step 5: Solve for x
    x = 245,928,568,367.48/570,501.57
  6. Step 6: Final answer
    x = 431,074.31

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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.