Home / 738,412.20-1,107,618.30-422,609.40

Finding the Fourth Proportional to 738,412.20, 1,107,618.30 and 422,609.40

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Solution

The fourth proportional to 738,412.20, 1,107,618.30 and 422,609.40 is: 633,914.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,412.20 : 1,107,618.30 = 422,609.40 : x
  2. Step 2: Convert to fraction form
    738,412.20/1,107,618.30 = 422,609.40/x
  3. Step 3: Cross multiply
    738,412.20x = 1,107,618.30 × 422,609.40
  4. Step 4: Simplify right side
    738,412.20x = 468,089,905,192.02
  5. Step 5: Solve for x
    x = 468,089,905,192.02/738,412.20
  6. Step 6: Final answer
    x = 633,914.10

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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.