Home / 947,338.40-1,420,942.80-307,632.80

Finding the Fourth Proportional to 947,338.40, 1,420,942.80 and 307,632.80

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Solution

The fourth proportional to 947,338.40, 1,420,942.80 and 307,632.80 is: 461,428.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,338.40 : 1,420,942.80 = 307,632.80 : x
  2. Step 2: Convert to fraction form
    947,338.40/1,420,942.80 = 307,632.80/x
  3. Step 3: Cross multiply
    947,338.40x = 1,420,942.80 × 307,632.80
  4. Step 4: Simplify right side
    947,338.40x = 437,128,612,203.84
  5. Step 5: Solve for x
    x = 437,128,612,203.84/947,338.40
  6. Step 6: Final answer
    x = 461,428.16

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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.