Home / 515,312,761.20-719,907,315.60-515,312,761.20

Finding the Fourth Proportional to 515,312,761.20, 719,907,315.60 and 515,312,761.20

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Solution

The fourth proportional to 515,312,761.20, 719,907,315.60 and 515,312,761.20 is: 719,907,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,312,761.20 : 719,907,315.60 = 515,312,761.20 : x
  2. Step 2: Convert to fraction form
    515,312,761.20/719,907,315.60 = 515,312,761.20/x
  3. Step 3: Cross multiply
    515,312,761.20x = 719,907,315.60 × 515,312,761.20
  4. Step 4: Simplify right side
    515,312,761.20x = 370,977,426,609,915,840
  5. Step 5: Solve for x
    x = 370,977,426,609,915,840/515,312,761.20
  6. Step 6: Final answer
    x = 719,907,315.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.