Home / 523,328,852.94-722,198,659.85-288,387,920.76

Finding the Fourth Proportional to 523,328,852.94, 722,198,659.85 and 288,387,920.76

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Solution

The fourth proportional to 523,328,852.94, 722,198,659.85 and 288,387,920.76 is: 397,977,999.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,328,852.94 : 722,198,659.85 = 288,387,920.76 : x
  2. Step 2: Convert to fraction form
    523,328,852.94/722,198,659.85 = 288,387,920.76/x
  3. Step 3: Cross multiply
    523,328,852.94x = 722,198,659.85 × 288,387,920.76
  4. Step 4: Simplify right side
    523,328,852.94x = 208,273,369,889,800,000
  5. Step 5: Solve for x
    x = 208,273,369,889,800,000/523,328,852.94
  6. Step 6: Final answer
    x = 397,977,999.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.