Home / 989,030-1,364,861.40-536,321.36

Finding the Fourth Proportional to 989,030, 1,364,861.40 and 536,321.36

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Solution

The fourth proportional to 989,030, 1,364,861.40 and 536,321.36 is: 740,123.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,030 : 1,364,861.40 = 536,321.36 : x
  2. Step 2: Convert to fraction form
    989,030/1,364,861.40 = 536,321.36/x
  3. Step 3: Cross multiply
    989,030x = 1,364,861.40 × 536,321.36
  4. Step 4: Simplify right side
    989,030x = 732,004,322,259.50
  5. Step 5: Solve for x
    x = 732,004,322,259.50/989,030
  6. Step 6: Final answer
    x = 740,123.48

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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.