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Finding the Fourth Proportional to 475,438.40, 664,369.60 and 475,438.40

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Solution

The fourth proportional to 475,438.40, 664,369.60 and 475,438.40 is: 664,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,438.40 : 664,369.60 = 475,438.40 : x
  2. Step 2: Convert to fraction form
    475,438.40/664,369.60 = 475,438.40/x
  3. Step 3: Cross multiply
    475,438.40x = 664,369.60 × 475,438.40
  4. Step 4: Simplify right side
    475,438.40x = 315,866,819,632.64
  5. Step 5: Solve for x
    x = 315,866,819,632.64/475,438.40
  6. Step 6: Final answer
    x = 664,369.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.