Home / 1,438,291.20-2,158,041.60-772,665.60

Finding the Fourth Proportional to 1,438,291.20, 2,158,041.60 and 772,665.60

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Solution

The fourth proportional to 1,438,291.20, 2,158,041.60 and 772,665.60 is: 1,159,323.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,291.20 : 2,158,041.60 = 772,665.60 : x
  2. Step 2: Convert to fraction form
    1,438,291.20/2,158,041.60 = 772,665.60/x
  3. Step 3: Cross multiply
    1,438,291.20x = 2,158,041.60 × 772,665.60
  4. Step 4: Simplify right side
    1,438,291.20x = 1,667,444,507,688.96
  5. Step 5: Solve for x
    x = 1,667,444,507,688.96/1,438,291.20
  6. Step 6: Final answer
    x = 1,159,323.31

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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.