Home / 683,948.16-943,819.14-378,008.72

Finding the Fourth Proportional to 683,948.16, 943,819.14 and 378,008.72

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Solution

The fourth proportional to 683,948.16, 943,819.14 and 378,008.72 is: 521,635.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,948.16 : 943,819.14 = 378,008.72 : x
  2. Step 2: Convert to fraction form
    683,948.16/943,819.14 = 378,008.72/x
  3. Step 3: Cross multiply
    683,948.16x = 943,819.14 × 378,008.72
  4. Step 4: Simplify right side
    683,948.16x = 356,771,865,022.90
  5. Step 5: Solve for x
    x = 356,771,865,022.90/683,948.16
  6. Step 6: Final answer
    x = 521,635.83

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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.