Home / 989,409.20-1,482,364.20-838,943.60

Finding the Fourth Proportional to 989,409.20, 1,482,364.20 and 838,943.60

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Solution

The fourth proportional to 989,409.20, 1,482,364.20 and 838,943.60 is: 1,256,931.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,409.20 : 1,482,364.20 = 838,943.60 : x
  2. Step 2: Convert to fraction form
    989,409.20/1,482,364.20 = 838,943.60/x
  3. Step 3: Cross multiply
    989,409.20x = 1,482,364.20 × 838,943.60
  4. Step 4: Simplify right side
    989,409.20x = 1,243,619,958,459.12
  5. Step 5: Solve for x
    x = 1,243,619,958,459.12/989,409.20
  6. Step 6: Final answer
    x = 1,256,931.87

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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.