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Finding the Fourth Proportional to 587,538.84, 810,815.58 and 319,284.12

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Solution

The fourth proportional to 587,538.84, 810,815.58 and 319,284.12 is: 440,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,538.84 : 810,815.58 = 319,284.12 : x
  2. Step 2: Convert to fraction form
    587,538.84/810,815.58 = 319,284.12/x
  3. Step 3: Cross multiply
    587,538.84x = 810,815.58 × 319,284.12
  4. Step 4: Simplify right side
    587,538.84x = 258,880,538,942.59
  5. Step 5: Solve for x
    x = 258,880,538,942.59/587,538.84
  6. Step 6: Final answer
    x = 440,618.60

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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.