Home / 678,231,320.60-1,017,346,980.90-672,491,757.80

Finding the Fourth Proportional to 678,231,320.60, 1,017,346,980.90 and 672,491,757.80

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Solution

The fourth proportional to 678,231,320.60, 1,017,346,980.90 and 672,491,757.80 is: 1,008,737,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,231,320.60 : 1,017,346,980.90 = 672,491,757.80 : x
  2. Step 2: Convert to fraction form
    678,231,320.60/1,017,346,980.90 = 672,491,757.80/x
  3. Step 3: Cross multiply
    678,231,320.60x = 1,017,346,980.90 × 672,491,757.80
  4. Step 4: Simplify right side
    678,231,320.60x = 684,157,459,477,963,904
  5. Step 5: Solve for x
    x = 684,157,459,477,963,904/678,231,320.60
  6. Step 6: Final answer
    x = 1,008,737,636.70

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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.