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Finding the Fourth Proportional to 570,371.63, 787,112.86 and 315,722.82

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Solution

The fourth proportional to 570,371.63, 787,112.86 and 315,722.82 is: 435,697.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,371.63 : 787,112.86 = 315,722.82 : x
  2. Step 2: Convert to fraction form
    570,371.63/787,112.86 = 315,722.82/x
  3. Step 3: Cross multiply
    570,371.63x = 787,112.86 × 315,722.82
  4. Step 4: Simplify right side
    570,371.63x = 248,509,491,817.47
  5. Step 5: Solve for x
    x = 248,509,491,817.47/570,371.63
  6. Step 6: Final answer
    x = 435,697.50

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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.