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Finding the Fourth Proportional to 417,505,769.56, 626,254,666.64 and 253,788,728.32

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Solution

The fourth proportional to 417,505,769.56, 626,254,666.64 and 253,788,728.32 is: 380,680,668.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,505,769.56 : 626,254,666.64 = 253,788,728.32 : x
  2. Step 2: Convert to fraction form
    417,505,769.56/626,254,666.64 = 253,788,728.32/x
  3. Step 3: Cross multiply
    417,505,769.56x = 626,254,666.64 × 253,788,728.32
  4. Step 4: Simplify right side
    417,505,769.56x = 158,936,375,451,031,104
  5. Step 5: Solve for x
    x = 158,936,375,451,031,104/417,505,769.56
  6. Step 6: Final answer
    x = 380,680,668.48

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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.