Home / 690,819.60-1,036,369.14-291,461.28

Finding the Fourth Proportional to 690,819.60, 1,036,369.14 and 291,461.28

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Solution

The fourth proportional to 690,819.60, 1,036,369.14 and 291,461.28 is: 437,250.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,819.60 : 1,036,369.14 = 291,461.28 : x
  2. Step 2: Convert to fraction form
    690,819.60/1,036,369.14 = 291,461.28/x
  3. Step 3: Cross multiply
    690,819.60x = 1,036,369.14 × 291,461.28
  4. Step 4: Simplify right side
    690,819.60x = 302,061,476,096.90
  5. Step 5: Solve for x
    x = 302,061,476,096.90/690,819.60
  6. Step 6: Final answer
    x = 437,250.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.