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Finding the Fourth Proportional to 702,787.60, 969,835.14 and 380,495.08

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Solution

The fourth proportional to 702,787.60, 969,835.14 and 380,495.08 is: 525,076.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,787.60 : 969,835.14 = 380,495.08 : x
  2. Step 2: Convert to fraction form
    702,787.60/969,835.14 = 380,495.08/x
  3. Step 3: Cross multiply
    702,787.60x = 969,835.14 × 380,495.08
  4. Step 4: Simplify right side
    702,787.60x = 369,017,499,181.11
  5. Step 5: Solve for x
    x = 369,017,499,181.11/702,787.60
  6. Step 6: Final answer
    x = 525,076.85

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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.