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Finding the Fourth Proportional to 366,421.20, 513,404.40 and 366,421.20

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Solution

The fourth proportional to 366,421.20, 513,404.40 and 366,421.20 is: 513,404.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,421.20 : 513,404.40 = 366,421.20 : x
  2. Step 2: Convert to fraction form
    366,421.20/513,404.40 = 366,421.20/x
  3. Step 3: Cross multiply
    366,421.20x = 513,404.40 × 366,421.20
  4. Step 4: Simplify right side
    366,421.20x = 188,122,256,333.28
  5. Step 5: Solve for x
    x = 188,122,256,333.28/366,421.20
  6. Step 6: Final answer
    x = 513,404.40

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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.