Home / 678,231,319.60-1,017,346,979.40-672,491,756.80

Finding the Fourth Proportional to 678,231,319.60, 1,017,346,979.40 and 672,491,756.80

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Solution

The fourth proportional to 678,231,319.60, 1,017,346,979.40 and 672,491,756.80 is: 1,008,737,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,231,319.60 : 1,017,346,979.40 = 672,491,756.80 : x
  2. Step 2: Convert to fraction form
    678,231,319.60/1,017,346,979.40 = 672,491,756.80/x
  3. Step 3: Cross multiply
    678,231,319.60x = 1,017,346,979.40 × 672,491,756.80
  4. Step 4: Simplify right side
    678,231,319.60x = 684,157,457,451,879,296
  5. Step 5: Solve for x
    x = 684,157,457,451,879,296/678,231,319.60
  6. Step 6: Final answer
    x = 1,008,737,635.20

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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.