Home / 525,312,140.80-787,968,211.20-518,145,779.20

Finding the Fourth Proportional to 525,312,140.80, 787,968,211.20 and 518,145,779.20

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Solution

The fourth proportional to 525,312,140.80, 787,968,211.20 and 518,145,779.20 is: 777,218,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,312,140.80 : 787,968,211.20 = 518,145,779.20 : x
  2. Step 2: Convert to fraction form
    525,312,140.80/787,968,211.20 = 518,145,779.20/x
  3. Step 3: Cross multiply
    525,312,140.80x = 787,968,211.20 × 518,145,779.20
  4. Step 4: Simplify right side
    525,312,140.80x = 408,282,402,777,054,208
  5. Step 5: Solve for x
    x = 408,282,402,777,054,208/525,312,140.80
  6. Step 6: Final answer
    x = 777,218,668.80

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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.