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Finding the Fourth Proportional to 702,801.76, 969,867 and 380,512.08

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Solution

The fourth proportional to 702,801.76, 969,867 and 380,512.08 is: 525,106.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,801.76 : 969,867 = 380,512.08 : x
  2. Step 2: Convert to fraction form
    702,801.76/969,867 = 380,512.08/x
  3. Step 3: Cross multiply
    702,801.76x = 969,867 × 380,512.08
  4. Step 4: Simplify right side
    702,801.76x = 369,046,109,493.36
  5. Step 5: Solve for x
    x = 369,046,109,493.36/702,801.76
  6. Step 6: Final answer
    x = 525,106.98

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1.5x scale

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.