Home / 989,887.67-1,365,339.31-908,478.34

Finding the Fourth Proportional to 989,887.67, 1,365,339.31 and 908,478.34

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Solution

The fourth proportional to 989,887.67, 1,365,339.31 and 908,478.34 is: 1,253,052.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,887.67 : 1,365,339.31 = 908,478.34 : x
  2. Step 2: Convert to fraction form
    989,887.67/1,365,339.31 = 908,478.34/x
  3. Step 3: Cross multiply
    989,887.67x = 1,365,339.31 × 908,478.34
  4. Step 4: Simplify right side
    989,887.67x = 1,240,381,189,885.55
  5. Step 5: Solve for x
    x = 1,240,381,189,885.55/989,887.67
  6. Step 6: Final answer
    x = 1,253,052.47

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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.