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Finding the Fourth Proportional to 388,879.72, 583,528.71 and 374,725.13

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Solution

The fourth proportional to 388,879.72, 583,528.71 and 374,725.13 is: 562,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,879.72 : 583,528.71 = 374,725.13 : x
  2. Step 2: Convert to fraction form
    388,879.72/583,528.71 = 374,725.13/x
  3. Step 3: Cross multiply
    388,879.72x = 583,528.71 × 374,725.13
  4. Step 4: Simplify right side
    388,879.72x = 218,662,866,922.21
  5. Step 5: Solve for x
    x = 218,662,866,922.21/388,879.72
  6. Step 6: Final answer
    x = 562,289.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.