Home / 683,939.60-943,885.51-378,009.40

Finding the Fourth Proportional to 683,939.60, 943,885.51 and 378,009.40

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Solution

The fourth proportional to 683,939.60, 943,885.51 and 378,009.40 is: 521,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,939.60 : 943,885.51 = 378,009.40 : x
  2. Step 2: Convert to fraction form
    683,939.60/943,885.51 = 378,009.40/x
  3. Step 3: Cross multiply
    683,939.60x = 943,885.51 × 378,009.40
  4. Step 4: Simplify right side
    683,939.60x = 356,797,595,303.79
  5. Step 5: Solve for x
    x = 356,797,595,303.79/683,939.60
  6. Step 6: Final answer
    x = 521,679.98

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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.