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Finding the Fourth Proportional to 507,778.65, 700,702.20 and 278,295.39

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Solution

The fourth proportional to 507,778.65, 700,702.20 and 278,295.39 is: 384,029.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,778.65 : 700,702.20 = 278,295.39 : x
  2. Step 2: Convert to fraction form
    507,778.65/700,702.20 = 278,295.39/x
  3. Step 3: Cross multiply
    507,778.65x = 700,702.20 × 278,295.39
  4. Step 4: Simplify right side
    507,778.65x = 195,002,192,022.86
  5. Step 5: Solve for x
    x = 195,002,192,022.86/507,778.65
  6. Step 6: Final answer
    x = 384,029.92

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1.5x scale

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.