Home / 1,147,399.40-1,583,412.77-638,101.78

Finding the Fourth Proportional to 1,147,399.40, 1,583,412.77 and 638,101.78

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Solution

The fourth proportional to 1,147,399.40, 1,583,412.77 and 638,101.78 is: 880,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,399.40 : 1,583,412.77 = 638,101.78 : x
  2. Step 2: Convert to fraction form
    1,147,399.40/1,583,412.77 = 638,101.78/x
  3. Step 3: Cross multiply
    1,147,399.40x = 1,583,412.77 × 638,101.78
  4. Step 4: Simplify right side
    1,147,399.40x = 1,010,378,507,011.73
  5. Step 5: Solve for x
    x = 1,010,378,507,011.73/1,147,399.40
  6. Step 6: Final answer
    x = 880,581.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.