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Finding the Fourth Proportional to 419,685,409.80, 629,528,114.70 and 147,020,747.40

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Solution

The fourth proportional to 419,685,409.80, 629,528,114.70 and 147,020,747.40 is: 220,531,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,685,409.80 : 629,528,114.70 = 147,020,747.40 : x
  2. Step 2: Convert to fraction form
    419,685,409.80/629,528,114.70 = 147,020,747.40/x
  3. Step 3: Cross multiply
    419,685,409.80x = 629,528,114.70 × 147,020,747.40
  4. Step 4: Simplify right side
    419,685,409.80x = 92,553,693,932,506,944
  5. Step 5: Solve for x
    x = 92,553,693,932,506,944/419,685,409.80
  6. Step 6: Final answer
    x = 220,531,121.10

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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.