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Finding the Fourth Proportional to 934,745.74, 1,401,557.73 and 428,672.77

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Solution

The fourth proportional to 934,745.74, 1,401,557.73 and 428,672.77 is: 642,751.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    934,745.74 : 1,401,557.73 = 428,672.77 : x
  2. Step 2: Convert to fraction form
    934,745.74/1,401,557.73 = 428,672.77/x
  3. Step 3: Cross multiply
    934,745.74x = 1,401,557.73 × 428,672.77
  4. Step 4: Simplify right side
    934,745.74x = 600,809,634,434.01
  5. Step 5: Solve for x
    x = 600,809,634,434.01/934,745.74
  6. Step 6: Final answer
    x = 642,751.94

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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.