Home / 989,117.60-1,483,676.40-279,136.40

Finding the Fourth Proportional to 989,117.60, 1,483,676.40 and 279,136.40

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Solution

The fourth proportional to 989,117.60, 1,483,676.40 and 279,136.40 is: 418,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,117.60 : 1,483,676.40 = 279,136.40 : x
  2. Step 2: Convert to fraction form
    989,117.60/1,483,676.40 = 279,136.40/x
  3. Step 3: Cross multiply
    989,117.60x = 1,483,676.40 × 279,136.40
  4. Step 4: Simplify right side
    989,117.60x = 414,148,089,060.96
  5. Step 5: Solve for x
    x = 414,148,089,060.96/989,117.60
  6. Step 6: Final answer
    x = 418,704.60

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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.