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Finding the Fourth Proportional to 620,401.55, 928,634.02 and 620,401.55

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Solution

The fourth proportional to 620,401.55, 928,634.02 and 620,401.55 is: 928,634.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,401.55 : 928,634.02 = 620,401.55 : x
  2. Step 2: Convert to fraction form
    620,401.55/928,634.02 = 620,401.55/x
  3. Step 3: Cross multiply
    620,401.55x = 928,634.02 × 620,401.55
  4. Step 4: Simplify right side
    620,401.55x = 576,125,985,390.73
  5. Step 5: Solve for x
    x = 576,125,985,390.73/620,401.55
  6. Step 6: Final answer
    x = 928,634.02

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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.