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Finding the Fourth Proportional to 565,569.52, 780,485.94 and 310,920.73

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Solution

The fourth proportional to 565,569.52, 780,485.94 and 310,920.73 is: 429,070.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,569.52 : 780,485.94 = 310,920.73 : x
  2. Step 2: Convert to fraction form
    565,569.52/780,485.94 = 310,920.73/x
  3. Step 3: Cross multiply
    565,569.52x = 780,485.94 × 310,920.73
  4. Step 4: Simplify right side
    565,569.52x = 242,669,258,219.54
  5. Step 5: Solve for x
    x = 242,669,258,219.54/565,569.52
  6. Step 6: Final answer
    x = 429,070.61

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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.