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Finding the Fourth Proportional to 587,123.56, 810,234.66 and 318,851.56

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Solution

The fourth proportional to 587,123.56, 810,234.66 and 318,851.56 is: 440,017.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,123.56 : 810,234.66 = 318,851.56 : x
  2. Step 2: Convert to fraction form
    587,123.56/810,234.66 = 318,851.56/x
  3. Step 3: Cross multiply
    587,123.56x = 810,234.66 × 318,851.56
  4. Step 4: Simplify right side
    587,123.56x = 258,344,585,307.07
  5. Step 5: Solve for x
    x = 258,344,585,307.07/587,123.56
  6. Step 6: Final answer
    x = 440,017.41

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1.5x scale

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.