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Finding the Fourth Proportional to 417,892,664.46, 626,840,454.69 and 126,762,295.98

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Solution

The fourth proportional to 417,892,664.46, 626,840,454.69 and 126,762,295.98 is: 190,143,886.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,892,664.46 : 626,840,454.69 = 126,762,295.98 : x
  2. Step 2: Convert to fraction form
    417,892,664.46/626,840,454.69 = 126,762,295.98/x
  3. Step 3: Cross multiply
    417,892,664.46x = 626,840,454.69 × 126,762,295.98
  4. Step 4: Simplify right side
    417,892,664.46x = 79,459,735,249,651,568
  5. Step 5: Solve for x
    x = 79,459,735,249,651,568/417,892,664.46
  6. Step 6: Final answer
    x = 190,143,886.24

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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.