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Finding the Fourth Proportional to 570,818.86, 787,701.92 and 312,696.92

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Solution

The fourth proportional to 570,818.86, 787,701.92 and 312,696.92 is: 431,506.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,818.86 : 787,701.92 = 312,696.92 : x
  2. Step 2: Convert to fraction form
    570,818.86/787,701.92 = 312,696.92/x
  3. Step 3: Cross multiply
    570,818.86x = 787,701.92 × 312,696.92
  4. Step 4: Simplify right side
    570,818.86x = 246,311,964,262.09
  5. Step 5: Solve for x
    x = 246,311,964,262.09/570,818.86
  6. Step 6: Final answer
    x = 431,506.35

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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.