Home / 525,885,138.40-787,316,053.20-321,811,794.40

Finding the Fourth Proportional to 525,885,138.40, 787,316,053.20 and 321,811,794.40

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Solution

The fourth proportional to 525,885,138.40, 787,316,053.20 and 321,811,794.40 is: 481,792,645.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,885,138.40 : 787,316,053.20 = 321,811,794.40 : x
  2. Step 2: Convert to fraction form
    525,885,138.40/787,316,053.20 = 321,811,794.40/x
  3. Step 3: Cross multiply
    525,885,138.40x = 787,316,053.20 × 321,811,794.40
  4. Step 4: Simplify right side
    525,885,138.40x = 253,367,591,840,217,856
  5. Step 5: Solve for x
    x = 253,367,591,840,217,856/525,885,138.40
  6. Step 6: Final answer
    x = 481,792,645.08

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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.