Home / 619,669.78-929,485.23-340,939.06

Finding the Fourth Proportional to 619,669.78, 929,485.23 and 340,939.06

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Solution

The fourth proportional to 619,669.78, 929,485.23 and 340,939.06 is: 511,397.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,669.78 : 929,485.23 = 340,939.06 : x
  2. Step 2: Convert to fraction form
    619,669.78/929,485.23 = 340,939.06/x
  3. Step 3: Cross multiply
    619,669.78x = 929,485.23 × 340,939.06
  4. Step 4: Simplify right side
    619,669.78x = 316,897,820,600.08
  5. Step 5: Solve for x
    x = 316,897,820,600.08/619,669.78
  6. Step 6: Final answer
    x = 511,397.89

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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.