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Finding the Fourth Proportional to 518,832.90, 778,577.40 and 305,600.40

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Solution

The fourth proportional to 518,832.90, 778,577.40 and 305,600.40 is: 458,593.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,832.90 : 778,577.40 = 305,600.40 : x
  2. Step 2: Convert to fraction form
    518,832.90/778,577.40 = 305,600.40/x
  3. Step 3: Cross multiply
    518,832.90x = 778,577.40 × 305,600.40
  4. Step 4: Simplify right side
    518,832.90x = 237,933,564,870.96
  5. Step 5: Solve for x
    x = 237,933,564,870.96/518,832.90
  6. Step 6: Final answer
    x = 458,593.83

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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.