Home / 419,904,482.60-629,856,723.90-392,694,703.40

Finding the Fourth Proportional to 419,904,482.60, 629,856,723.90 and 392,694,703.40

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Solution

The fourth proportional to 419,904,482.60, 629,856,723.90 and 392,694,703.40 is: 589,042,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,482.60 : 629,856,723.90 = 392,694,703.40 : x
  2. Step 2: Convert to fraction form
    419,904,482.60/629,856,723.90 = 392,694,703.40/x
  3. Step 3: Cross multiply
    419,904,482.60x = 629,856,723.90 × 392,694,703.40
  4. Step 4: Simplify right side
    419,904,482.60x = 247,341,399,376,406,176
  5. Step 5: Solve for x
    x = 247,341,399,376,406,176/419,904,482.60
  6. Step 6: Final answer
    x = 589,042,055.10

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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.