Home / 421,814,520.20-632,752,089.16-145,461,758.86

Finding the Fourth Proportional to 421,814,520.20, 632,752,089.16 and 145,461,758.86

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Solution

The fourth proportional to 421,814,520.20, 632,752,089.16 and 145,461,758.86 is: 218,203,090.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,814,520.20 : 632,752,089.16 = 145,461,758.86 : x
  2. Step 2: Convert to fraction form
    421,814,520.20/632,752,089.16 = 145,461,758.86/x
  3. Step 3: Cross multiply
    421,814,520.20x = 632,752,089.16 × 145,461,758.86
  4. Step 4: Simplify right side
    421,814,520.20x = 92,041,231,811,553,152
  5. Step 5: Solve for x
    x = 92,041,231,811,553,152/421,814,520.20
  6. Step 6: Final answer
    x = 218,203,090.23

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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.