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Finding the Fourth Proportional to 680,900.64, 937,614 and 665,795.04

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Solution

The fourth proportional to 680,900.64, 937,614 and 665,795.04 is: 916,813.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,900.64 : 937,614 = 665,795.04 : x
  2. Step 2: Convert to fraction form
    680,900.64/937,614 = 665,795.04/x
  3. Step 3: Cross multiply
    680,900.64x = 937,614 × 665,795.04
  4. Step 4: Simplify right side
    680,900.64x = 624,258,750,634.56
  5. Step 5: Solve for x
    x = 624,258,750,634.56/680,900.64
  6. Step 6: Final answer
    x = 916,813.28

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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.