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Finding the Fourth Proportional to 570,939.81, 787,839.53 and 316,243.41

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Solution

The fourth proportional to 570,939.81, 787,839.53 and 316,243.41 is: 436,384.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,939.81 : 787,839.53 = 316,243.41 : x
  2. Step 2: Convert to fraction form
    570,939.81/787,839.53 = 316,243.41/x
  3. Step 3: Cross multiply
    570,939.81x = 787,839.53 × 316,243.41
  4. Step 4: Simplify right side
    570,939.81x = 249,149,057,918.78
  5. Step 5: Solve for x
    x = 249,149,057,918.78/570,939.81
  6. Step 6: Final answer
    x = 436,384.10

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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.