Home / 1,205,193,839.20-1,807,342,861.20-478,032,085.60

Finding the Fourth Proportional to 1,205,193,839.20, 1,807,342,861.20 and 478,032,085.60

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Solution

The fourth proportional to 1,205,193,839.20, 1,807,342,861.20 and 478,032,085.60 is: 716,870,472.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,193,839.20 : 1,807,342,861.20 = 478,032,085.60 : x
  2. Step 2: Convert to fraction form
    1,205,193,839.20/1,807,342,861.20 = 478,032,085.60/x
  3. Step 3: Cross multiply
    1,205,193,839.20x = 1,807,342,861.20 × 478,032,085.60
  4. Step 4: Simplify right side
    1,205,193,839.20x = 863,967,877,333,707,392
  5. Step 5: Solve for x
    x = 863,967,877,333,707,392/1,205,193,839.20
  6. Step 6: Final answer
    x = 716,870,472.81

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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.