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Finding the Fourth Proportional to 702,787.39, 969,845.40 and 380,497.50

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Solution

The fourth proportional to 702,787.39, 969,845.40 and 380,497.50 is: 525,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,787.39 : 969,845.40 = 380,497.50 : x
  2. Step 2: Convert to fraction form
    702,787.39/969,845.40 = 380,497.50/x
  3. Step 3: Cross multiply
    702,787.39x = 969,845.40 × 380,497.50
  4. Step 4: Simplify right side
    702,787.39x = 369,023,750,086.50
  5. Step 5: Solve for x
    x = 369,023,750,086.50/702,787.39
  6. Step 6: Final answer
    x = 525,085.90

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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.