Home / 399,105,087.90-598,657,631.85-331,920,447.90

Finding the Fourth Proportional to 399,105,087.90, 598,657,631.85 and 331,920,447.90

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Solution

The fourth proportional to 399,105,087.90, 598,657,631.85 and 331,920,447.90 is: 497,880,671.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,105,087.90 : 598,657,631.85 = 331,920,447.90 : x
  2. Step 2: Convert to fraction form
    399,105,087.90/598,657,631.85 = 331,920,447.90/x
  3. Step 3: Cross multiply
    399,105,087.90x = 598,657,631.85 × 331,920,447.90
  4. Step 4: Simplify right side
    399,105,087.90x = 198,706,709,302,405,312
  5. Step 5: Solve for x
    x = 198,706,709,302,405,312/399,105,087.90
  6. Step 6: Final answer
    x = 497,880,671.85

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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.