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Finding the Fourth Proportional to 370,980,064.20, 518,691,845.40 and 370,980,064.20

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Solution

The fourth proportional to 370,980,064.20, 518,691,845.40 and 370,980,064.20 is: 518,691,845.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,980,064.20 : 518,691,845.40 = 370,980,064.20 : x
  2. Step 2: Convert to fraction form
    370,980,064.20/518,691,845.40 = 370,980,064.20/x
  3. Step 3: Cross multiply
    370,980,064.20x = 518,691,845.40 × 370,980,064.20
  4. Step 4: Simplify right side
    370,980,064.20x = 192,424,334,106,508,448
  5. Step 5: Solve for x
    x = 192,424,334,106,508,448/370,980,064.20
  6. Step 6: Final answer
    x = 518,691,845.40

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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.