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Finding the Fourth Proportional to 570,329.52, 787,055.73 and 312,206.64

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Solution

The fourth proportional to 570,329.52, 787,055.73 and 312,206.64 is: 430,845.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,329.52 : 787,055.73 = 312,206.64 : x
  2. Step 2: Convert to fraction form
    570,329.52/787,055.73 = 312,206.64/x
  3. Step 3: Cross multiply
    570,329.52x = 787,055.73 × 312,206.64
  4. Step 4: Simplify right side
    570,329.52x = 245,724,024,956.05
  5. Step 5: Solve for x
    x = 245,724,024,956.05/570,329.52
  6. Step 6: Final answer
    x = 430,845.71

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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.