Home / 426,488,814.80-639,733,222.20-397,791,000.80

Finding the Fourth Proportional to 426,488,814.80, 639,733,222.20 and 397,791,000.80

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Solution

The fourth proportional to 426,488,814.80, 639,733,222.20 and 397,791,000.80 is: 596,686,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,488,814.80 : 639,733,222.20 = 397,791,000.80 : x
  2. Step 2: Convert to fraction form
    426,488,814.80/639,733,222.20 = 397,791,000.80/x
  3. Step 3: Cross multiply
    426,488,814.80x = 639,733,222.20 × 397,791,000.80
  4. Step 4: Simplify right side
    426,488,814.80x = 254,480,118,703,946,816
  5. Step 5: Solve for x
    x = 254,480,118,703,946,816/426,488,814.80
  6. Step 6: Final answer
    x = 596,686,501.20

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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.