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Finding the Fourth Proportional to 2,657,914.40, 3,986,223.60 and 764,458.40

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Solution

The fourth proportional to 2,657,914.40, 3,986,223.60 and 764,458.40 is: 1,146,501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657,914.40 : 3,986,223.60 = 764,458.40 : x
  2. Step 2: Convert to fraction form
    2,657,914.40/3,986,223.60 = 764,458.40/x
  3. Step 3: Cross multiply
    2,657,914.40x = 3,986,223.60 × 764,458.40
  4. Step 4: Simplify right side
    2,657,914.40x = 3,047,302,115,298.24
  5. Step 5: Solve for x
    x = 3,047,302,115,298.24/2,657,914.40
  6. Step 6: Final answer
    x = 1,146,501.22

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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.