Home / 419,904,047.40-629,856,071.10-316,439,701.80

Finding the Fourth Proportional to 419,904,047.40, 629,856,071.10 and 316,439,701.80

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Solution

The fourth proportional to 419,904,047.40, 629,856,071.10 and 316,439,701.80 is: 474,659,552.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,047.40 : 629,856,071.10 = 316,439,701.80 : x
  2. Step 2: Convert to fraction form
    419,904,047.40/629,856,071.10 = 316,439,701.80/x
  3. Step 3: Cross multiply
    419,904,047.40x = 629,856,071.10 × 316,439,701.80
  4. Step 4: Simplify right side
    419,904,047.40x = 199,311,467,315,803,616
  5. Step 5: Solve for x
    x = 199,311,467,315,803,616/419,904,047.40
  6. Step 6: Final answer
    x = 474,659,552.70

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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.