Home / 989,450.40-1,389,429.60-989,450.40

Finding the Fourth Proportional to 989,450.40, 1,389,429.60 and 989,450.40

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Solution

The fourth proportional to 989,450.40, 1,389,429.60 and 989,450.40 is: 1,389,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,450.40 : 1,389,429.60 = 989,450.40 : x
  2. Step 2: Convert to fraction form
    989,450.40/1,389,429.60 = 989,450.40/x
  3. Step 3: Cross multiply
    989,450.40x = 1,389,429.60 × 989,450.40
  4. Step 4: Simplify right side
    989,450.40x = 1,374,771,673,491.84
  5. Step 5: Solve for x
    x = 1,374,771,673,491.84/989,450.40
  6. Step 6: Final answer
    x = 1,389,429.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.