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Finding the Fourth Proportional to 613,272,433.20, 919,908,649.80 and 368,384,420.40

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Solution

The fourth proportional to 613,272,433.20, 919,908,649.80 and 368,384,420.40 is: 552,576,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,272,433.20 : 919,908,649.80 = 368,384,420.40 : x
  2. Step 2: Convert to fraction form
    613,272,433.20/919,908,649.80 = 368,384,420.40/x
  3. Step 3: Cross multiply
    613,272,433.20x = 919,908,649.80 × 368,384,420.40
  4. Step 4: Simplify right side
    613,272,433.20x = 338,880,014,777,519,552
  5. Step 5: Solve for x
    x = 338,880,014,777,519,552/613,272,433.20
  6. Step 6: Final answer
    x = 552,576,630.60

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1.5x scale

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.