Home / 947,205.20-1,420,289.40-385,605.20

Finding the Fourth Proportional to 947,205.20, 1,420,289.40 and 385,605.20

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Solution

The fourth proportional to 947,205.20, 1,420,289.40 and 385,605.20 is: 578,196.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,205.20 : 1,420,289.40 = 385,605.20 : x
  2. Step 2: Convert to fraction form
    947,205.20/1,420,289.40 = 385,605.20/x
  3. Step 3: Cross multiply
    947,205.20x = 1,420,289.40 × 385,605.20
  4. Step 4: Simplify right side
    947,205.20x = 547,670,978,144.88
  5. Step 5: Solve for x
    x = 547,670,978,144.88/947,205.20
  6. Step 6: Final answer
    x = 578,196.76

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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.