Home / 1,330,286.40-1,996,216.32-489,428.16

Finding the Fourth Proportional to 1,330,286.40, 1,996,216.32 and 489,428.16

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Solution

The fourth proportional to 1,330,286.40, 1,996,216.32 and 489,428.16 is: 734,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,286.40 : 1,996,216.32 = 489,428.16 : x
  2. Step 2: Convert to fraction form
    1,330,286.40/1,996,216.32 = 489,428.16/x
  3. Step 3: Cross multiply
    1,330,286.40x = 1,996,216.32 × 489,428.16
  4. Step 4: Simplify right side
    1,330,286.40x = 977,004,480,459.57
  5. Step 5: Solve for x
    x = 977,004,480,459.57/1,330,286.40
  6. Step 6: Final answer
    x = 734,431.68

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1.5x scale

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.