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Finding the Fourth Proportional to 570,614.63, 787,442.54 and 308,968.68

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Solution

The fourth proportional to 570,614.63, 787,442.54 and 308,968.68 is: 426,373.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,614.63 : 787,442.54 = 308,968.68 : x
  2. Step 2: Convert to fraction form
    570,614.63/787,442.54 = 308,968.68/x
  3. Step 3: Cross multiply
    570,614.63x = 787,442.54 × 308,968.68
  4. Step 4: Simplify right side
    570,614.63x = 243,295,080,007.32
  5. Step 5: Solve for x
    x = 243,295,080,007.32/570,614.63
  6. Step 6: Final answer
    x = 426,373.72

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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.