Home / 856,604,121.53-1,284,910,616.16-389,939,187.92

Finding the Fourth Proportional to 856,604,121.53, 1,284,910,616.16 and 389,939,187.92

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Solution

The fourth proportional to 856,604,121.53, 1,284,910,616.16 and 389,939,187.92 is: 584,910,800.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,604,121.53 : 1,284,910,616.16 = 389,939,187.92 : x
  2. Step 2: Convert to fraction form
    856,604,121.53/1,284,910,616.16 = 389,939,187.92/x
  3. Step 3: Cross multiply
    856,604,121.53x = 1,284,910,616.16 × 389,939,187.92
  4. Step 4: Simplify right side
    856,604,121.53x = 501,037,002,208,792,768
  5. Step 5: Solve for x
    x = 501,037,002,208,792,768/856,604,121.53
  6. Step 6: Final answer
    x = 584,910,800.24

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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.