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Finding the Fourth Proportional to 672,559.91, 928,391.75 and 492,700.35

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Solution

The fourth proportional to 672,559.91, 928,391.75 and 492,700.35 is: 680,116.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,559.91 : 928,391.75 = 492,700.35 : x
  2. Step 2: Convert to fraction form
    672,559.91/928,391.75 = 492,700.35/x
  3. Step 3: Cross multiply
    672,559.91x = 928,391.75 × 492,700.35
  4. Step 4: Simplify right side
    672,559.91x = 457,418,936,580.09
  5. Step 5: Solve for x
    x = 457,418,936,580.09/672,559.91
  6. Step 6: Final answer
    x = 680,116.27

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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.