Home / 663,939.80-916,236.90-377,459.89

Finding the Fourth Proportional to 663,939.80, 916,236.90 and 377,459.89

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Solution

The fourth proportional to 663,939.80, 916,236.90 and 377,459.89 is: 520,894.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,939.80 : 916,236.90 = 377,459.89 : x
  2. Step 2: Convert to fraction form
    663,939.80/916,236.90 = 377,459.89/x
  3. Step 3: Cross multiply
    663,939.80x = 916,236.90 × 377,459.89
  4. Step 4: Simplify right side
    663,939.80x = 345,842,679,487.94
  5. Step 5: Solve for x
    x = 345,842,679,487.94/663,939.80
  6. Step 6: Final answer
    x = 520,894.63

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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.