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Finding the Fourth Proportional to 497,713.20, 745,986.60 and 372,908.40

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Solution

The fourth proportional to 497,713.20, 745,986.60 and 372,908.40 is: 558,925.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,713.20 : 745,986.60 = 372,908.40 : x
  2. Step 2: Convert to fraction form
    497,713.20/745,986.60 = 372,908.40/x
  3. Step 3: Cross multiply
    497,713.20x = 745,986.60 × 372,908.40
  4. Step 4: Simplify right side
    497,713.20x = 278,184,669,427.44
  5. Step 5: Solve for x
    x = 278,184,669,427.44/497,713.20
  6. Step 6: Final answer
    x = 558,925.64

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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.