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Finding the Fourth Proportional to 570,605.87, 787,426.48 and 315,951.59

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Solution

The fourth proportional to 570,605.87, 787,426.48 and 315,951.59 is: 436,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,605.87 : 787,426.48 = 315,951.59 : x
  2. Step 2: Convert to fraction form
    570,605.87/787,426.48 = 315,951.59/x
  3. Step 3: Cross multiply
    570,605.87x = 787,426.48 × 315,951.59
  4. Step 4: Simplify right side
    570,605.87x = 248,788,643,637.09
  5. Step 5: Solve for x
    x = 248,788,643,637.09/570,605.87
  6. Step 6: Final answer
    x = 436,007.86

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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.