Home / 621,782,401.20-933,270,798.60-315,420,442.80

Finding the Fourth Proportional to 621,782,401.20, 933,270,798.60 and 315,420,442.80

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Solution

The fourth proportional to 621,782,401.20, 933,270,798.60 and 315,420,442.80 is: 473,433,612.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,782,401.20 : 933,270,798.60 = 315,420,442.80 : x
  2. Step 2: Convert to fraction form
    621,782,401.20/933,270,798.60 = 315,420,442.80/x
  3. Step 3: Cross multiply
    621,782,401.20x = 933,270,798.60 × 315,420,442.80
  4. Step 4: Simplify right side
    621,782,401.20x = 294,372,688,546,721,664
  5. Step 5: Solve for x
    x = 294,372,688,546,721,664/621,782,401.20
  6. Step 6: Final answer
    x = 473,433,612.75

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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.