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Finding the Fourth Proportional to 539,977.56, 745,313.04 and 310,559.64

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Solution

The fourth proportional to 539,977.56, 745,313.04 and 310,559.64 is: 428,655.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,977.56 : 745,313.04 = 310,559.64 : x
  2. Step 2: Convert to fraction form
    539,977.56/745,313.04 = 310,559.64/x
  3. Step 3: Cross multiply
    539,977.56x = 745,313.04 × 310,559.64
  4. Step 4: Simplify right side
    539,977.56x = 231,464,149,389.71
  5. Step 5: Solve for x
    x = 231,464,149,389.71/539,977.56
  6. Step 6: Final answer
    x = 428,655.13

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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.