Home / 518,837.40-778,584.15-305,604.90

Finding the Fourth Proportional to 518,837.40, 778,584.15 and 305,604.90

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Solution

The fourth proportional to 518,837.40, 778,584.15 and 305,604.90 is: 458,600.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,837.40 : 778,584.15 = 305,604.90 : x
  2. Step 2: Convert to fraction form
    518,837.40/778,584.15 = 305,604.90/x
  3. Step 3: Cross multiply
    518,837.40x = 778,584.15 × 305,604.90
  4. Step 4: Simplify right side
    518,837.40x = 237,939,131,302.34
  5. Step 5: Solve for x
    x = 237,939,131,302.34/518,837.40
  6. Step 6: Final answer
    x = 458,600.58

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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.