Home / 738,011.80-1,107,017.70-422,500.60

Finding the Fourth Proportional to 738,011.80, 1,107,017.70 and 422,500.60

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Solution

The fourth proportional to 738,011.80, 1,107,017.70 and 422,500.60 is: 633,750.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,011.80 : 1,107,017.70 = 422,500.60 : x
  2. Step 2: Convert to fraction form
    738,011.80/1,107,017.70 = 422,500.60/x
  3. Step 3: Cross multiply
    738,011.80x = 1,107,017.70 × 422,500.60
  4. Step 4: Simplify right side
    738,011.80x = 467,715,642,460.62
  5. Step 5: Solve for x
    x = 467,715,642,460.62/738,011.80
  6. Step 6: Final answer
    x = 633,750.90

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Double scale
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Similar ratio
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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.