Home / 1,290,341.10-1,935,905.40-659,697.78

Finding the Fourth Proportional to 1,290,341.10, 1,935,905.40 and 659,697.78

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Solution

The fourth proportional to 1,290,341.10, 1,935,905.40 and 659,697.78 is: 989,747.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,341.10 : 1,935,905.40 = 659,697.78 : x
  2. Step 2: Convert to fraction form
    1,290,341.10/1,935,905.40 = 659,697.78/x
  3. Step 3: Cross multiply
    1,290,341.10x = 1,935,905.40 × 659,697.78
  4. Step 4: Simplify right side
    1,290,341.10x = 1,277,112,494,670.01
  5. Step 5: Solve for x
    x = 1,277,112,494,670.01/1,290,341.10
  6. Step 6: Final answer
    x = 989,747.98

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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.