Home / 525,312,137.30-787,968,205.95-518,145,775.70

Finding the Fourth Proportional to 525,312,137.30, 787,968,205.95 and 518,145,775.70

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Solution

The fourth proportional to 525,312,137.30, 787,968,205.95 and 518,145,775.70 is: 777,218,663.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,312,137.30 : 787,968,205.95 = 518,145,775.70 : x
  2. Step 2: Convert to fraction form
    525,312,137.30/787,968,205.95 = 518,145,775.70/x
  3. Step 3: Cross multiply
    525,312,137.30x = 787,968,205.95 × 518,145,775.70
  4. Step 4: Simplify right side
    525,312,137.30x = 408,282,397,298,900,096
  5. Step 5: Solve for x
    x = 408,282,397,298,900,096/525,312,137.30
  6. Step 6: Final answer
    x = 777,218,663.55

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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.