Home / 690,664.28-953,160.60-418,758.20

Finding the Fourth Proportional to 690,664.28, 953,160.60 and 418,758.20

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Solution

The fourth proportional to 690,664.28, 953,160.60 and 418,758.20 is: 577,912.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,664.28 : 953,160.60 = 418,758.20 : x
  2. Step 2: Convert to fraction form
    690,664.28/953,160.60 = 418,758.20/x
  3. Step 3: Cross multiply
    690,664.28x = 953,160.60 × 418,758.20
  4. Step 4: Simplify right side
    690,664.28x = 399,143,817,166.92
  5. Step 5: Solve for x
    x = 399,143,817,166.92/690,664.28
  6. Step 6: Final answer
    x = 577,912.93

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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.