Home / 658,893,205.12-909,353,260.38-380,434,261.18

Finding the Fourth Proportional to 658,893,205.12, 909,353,260.38 and 380,434,261.18

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Solution

The fourth proportional to 658,893,205.12, 909,353,260.38 and 380,434,261.18 is: 525,045,839.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,893,205.12 : 909,353,260.38 = 380,434,261.18 : x
  2. Step 2: Convert to fraction form
    658,893,205.12/909,353,260.38 = 380,434,261.18/x
  3. Step 3: Cross multiply
    658,893,205.12x = 909,353,260.38 × 380,434,261.18
  4. Step 4: Simplify right side
    658,893,205.12x = 345,949,135,764,289,472
  5. Step 5: Solve for x
    x = 345,949,135,764,289,472/658,893,205.12
  6. Step 6: Final answer
    x = 525,045,839.11

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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.