Home / 523,184.72-721,981.32-305,435.12

Finding the Fourth Proportional to 523,184.72, 721,981.32 and 305,435.12

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Solution

The fourth proportional to 523,184.72, 721,981.32 and 305,435.12 is: 421,492.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,184.72 : 721,981.32 = 305,435.12 : x
  2. Step 2: Convert to fraction form
    523,184.72/721,981.32 = 305,435.12/x
  3. Step 3: Cross multiply
    523,184.72x = 721,981.32 × 305,435.12
  4. Step 4: Simplify right side
    523,184.72x = 220,518,451,111.96
  5. Step 5: Solve for x
    x = 220,518,451,111.96/523,184.72
  6. Step 6: Final answer
    x = 421,492.53

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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.