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Finding the Fourth Proportional to 934,745.76, 1,401,557.68 and 428,672.80

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Solution

The fourth proportional to 934,745.76, 1,401,557.68 and 428,672.80 is: 642,751.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    934,745.76 : 1,401,557.68 = 428,672.80 : x
  2. Step 2: Convert to fraction form
    934,745.76/1,401,557.68 = 428,672.80/x
  3. Step 3: Cross multiply
    934,745.76x = 1,401,557.68 × 428,672.80
  4. Step 4: Simplify right side
    934,745.76x = 600,809,655,047.10
  5. Step 5: Solve for x
    x = 600,809,655,047.10/934,745.76
  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.