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Finding the Fourth Proportional to 620,400.55, 928,632.53 and 620,400.55

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Solution

The fourth proportional to 620,400.55, 928,632.53 and 620,400.55 is: 928,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,400.55 : 928,632.53 = 620,400.55 : x
  2. Step 2: Convert to fraction form
    620,400.55/928,632.53 = 620,400.55/x
  3. Step 3: Cross multiply
    620,400.55x = 928,632.53 × 620,400.55
  4. Step 4: Simplify right side
    620,400.55x = 576,124,129,257.89
  5. Step 5: Solve for x
    x = 576,124,129,257.89/620,400.55
  6. Step 6: Final answer
    x = 928,632.53

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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.