Home / 890,399.58-1,335,681.90-321,922.86

Finding the Fourth Proportional to 890,399.58, 1,335,681.90 and 321,922.86

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Solution

The fourth proportional to 890,399.58, 1,335,681.90 and 321,922.86 is: 482,914.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,399.58 : 1,335,681.90 = 321,922.86 : x
  2. Step 2: Convert to fraction form
    890,399.58/1,335,681.90 = 321,922.86/x
  3. Step 3: Cross multiply
    890,399.58x = 1,335,681.90 × 321,922.86
  4. Step 4: Simplify right side
    890,399.58x = 429,986,537,298.23
  5. Step 5: Solve for x
    x = 429,986,537,298.23/890,399.58
  6. Step 6: Final answer
    x = 482,914.13

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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.