Home / 328,981.20-493,169.40-328,779.60

Finding the Fourth Proportional to 328,981.20, 493,169.40 and 328,779.60

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Solution

The fourth proportional to 328,981.20, 493,169.40 and 328,779.60 is: 492,867.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,981.20 : 493,169.40 = 328,779.60 : x
  2. Step 2: Convert to fraction form
    328,981.20/493,169.40 = 328,779.60/x
  3. Step 3: Cross multiply
    328,981.20x = 493,169.40 × 328,779.60
  4. Step 4: Simplify right side
    328,981.20x = 162,144,038,064.24
  5. Step 5: Solve for x
    x = 162,144,038,064.24/328,981.20
  6. Step 6: Final answer
    x = 492,867.19

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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.