Home / 661,607,405.40-992,411,108.10-443,929,171.80

Finding the Fourth Proportional to 661,607,405.40, 992,411,108.10 and 443,929,171.80

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Solution

The fourth proportional to 661,607,405.40, 992,411,108.10 and 443,929,171.80 is: 665,893,757.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,607,405.40 : 992,411,108.10 = 443,929,171.80 : x
  2. Step 2: Convert to fraction form
    661,607,405.40/992,411,108.10 = 443,929,171.80/x
  3. Step 3: Cross multiply
    661,607,405.40x = 992,411,108.10 × 443,929,171.80
  4. Step 4: Simplify right side
    661,607,405.40x = 440,560,241,303,953,280
  5. Step 5: Solve for x
    x = 440,560,241,303,953,280/661,607,405.40
  6. Step 6: Final answer
    x = 665,893,757.70

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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.