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Finding the Fourth Proportional to 638,582.40, 956,836.80 and 401,500.80

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Solution

The fourth proportional to 638,582.40, 956,836.80 and 401,500.80 is: 601,599.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,582.40 : 956,836.80 = 401,500.80 : x
  2. Step 2: Convert to fraction form
    638,582.40/956,836.80 = 401,500.80/x
  3. Step 3: Cross multiply
    638,582.40x = 956,836.80 × 401,500.80
  4. Step 4: Simplify right side
    638,582.40x = 384,170,740,669.44
  5. Step 5: Solve for x
    x = 384,170,740,669.44/638,582.40
  6. Step 6: Final answer
    x = 601,599.32

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1.5x scale

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.