Home / 512,475,348.60-768,713,022.90-318,983,585.40

Finding the Fourth Proportional to 512,475,348.60, 768,713,022.90 and 318,983,585.40

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Solution

The fourth proportional to 512,475,348.60, 768,713,022.90 and 318,983,585.40 is: 478,475,378.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,475,348.60 : 768,713,022.90 = 318,983,585.40 : x
  2. Step 2: Convert to fraction form
    512,475,348.60/768,713,022.90 = 318,983,585.40/x
  3. Step 3: Cross multiply
    512,475,348.60x = 768,713,022.90 × 318,983,585.40
  4. Step 4: Simplify right side
    512,475,348.60x = 245,206,836,188,314,272
  5. Step 5: Solve for x
    x = 245,206,836,188,314,272/512,475,348.60
  6. Step 6: Final answer
    x = 478,475,378.10

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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.