Home / 628,445.86-942,816.39-207,721.69

Finding the Fourth Proportional to 628,445.86, 942,816.39 and 207,721.69

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Solution

The fourth proportional to 628,445.86, 942,816.39 and 207,721.69 is: 311,631.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,445.86 : 942,816.39 = 207,721.69 : x
  2. Step 2: Convert to fraction form
    628,445.86/942,816.39 = 207,721.69/x
  3. Step 3: Cross multiply
    628,445.86x = 942,816.39 × 207,721.69
  4. Step 4: Simplify right side
    628,445.86x = 195,843,413,890.50
  5. Step 5: Solve for x
    x = 195,843,413,890.50/628,445.86
  6. Step 6: Final answer
    x = 311,631.32

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1.5x scale

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.