Home / 664,019.07-916,253.87-377,507.49

Finding the Fourth Proportional to 664,019.07, 916,253.87 and 377,507.49

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Solution

The fourth proportional to 664,019.07, 916,253.87 and 377,507.49 is: 520,907.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,019.07 : 916,253.87 = 377,507.49 : x
  2. Step 2: Convert to fraction form
    664,019.07/916,253.87 = 377,507.49/x
  3. Step 3: Cross multiply
    664,019.07x = 916,253.87 × 377,507.49
  4. Step 4: Simplify right side
    664,019.07x = 345,892,698,666.49
  5. Step 5: Solve for x
    x = 345,892,698,666.49/664,019.07
  6. Step 6: Final answer
    x = 520,907.78

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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.