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Finding the Fourth Proportional to 604,548,627, 905,878,156.47 and 420,675,355.41

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Solution

The fourth proportional to 604,548,627, 905,878,156.47 and 420,675,355.41 is: 630,355,604.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,548,627 : 905,878,156.47 = 420,675,355.41 : x
  2. Step 2: Convert to fraction form
    604,548,627/905,878,156.47 = 420,675,355.41/x
  3. Step 3: Cross multiply
    604,548,627x = 905,878,156.47 × 420,675,355.41
  4. Step 4: Simplify right side
    604,548,627x = 381,080,615,431,172,864
  5. Step 5: Solve for x
    x = 381,080,615,431,172,864/604,548,627
  6. Step 6: Final answer
    x = 630,355,604.85

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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.