Home / 678,307,720.20-936,267,644.34-396,126,278.04

Finding the Fourth Proportional to 678,307,720.20, 936,267,644.34 and 396,126,278.04

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Solution

The fourth proportional to 678,307,720.20, 936,267,644.34 and 396,126,278.04 is: 546,772,808.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,307,720.20 : 936,267,644.34 = 396,126,278.04 : x
  2. Step 2: Convert to fraction form
    678,307,720.20/936,267,644.34 = 396,126,278.04/x
  3. Step 3: Cross multiply
    678,307,720.20x = 936,267,644.34 × 396,126,278.04
  4. Step 4: Simplify right side
    678,307,720.20x = 370,880,217,201,682,688
  5. Step 5: Solve for x
    x = 370,880,217,201,682,688/678,307,720.20
  6. Step 6: Final answer
    x = 546,772,808.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.