Home / 1,470,243.40-2,201,217.90-1,428,771.40

Finding the Fourth Proportional to 1,470,243.40, 2,201,217.90 and 1,428,771.40

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Solution

The fourth proportional to 1,470,243.40, 2,201,217.90 and 1,428,771.40 is: 2,139,126.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,470,243.40 : 2,201,217.90 = 1,428,771.40 : x
  2. Step 2: Convert to fraction form
    1,470,243.40/2,201,217.90 = 1,428,771.40/x
  3. Step 3: Cross multiply
    1,470,243.40x = 2,201,217.90 × 1,428,771.40
  4. Step 4: Simplify right side
    1,470,243.40x = 3,145,037,180,688.06
  5. Step 5: Solve for x
    x = 3,145,037,180,688.06/1,470,243.40
  6. Step 6: Final answer
    x = 2,139,126.88

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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.