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Finding the Fourth Proportional to 638,065.68, 880,523.49 and 362,421.60

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Solution

The fourth proportional to 638,065.68, 880,523.49 and 362,421.60 is: 500,137.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,065.68 : 880,523.49 = 362,421.60 : x
  2. Step 2: Convert to fraction form
    638,065.68/880,523.49 = 362,421.60/x
  3. Step 3: Cross multiply
    638,065.68x = 880,523.49 × 362,421.60
  4. Step 4: Simplify right side
    638,065.68x = 319,120,732,083.38
  5. Step 5: Solve for x
    x = 319,120,732,083.38/638,065.68
  6. Step 6: Final answer
    x = 500,137.75

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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.