Home / 1,189,905.58-1,785,567.53-431,806.20

Finding the Fourth Proportional to 1,189,905.58, 1,785,567.53 and 431,806.20

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Solution

The fourth proportional to 1,189,905.58, 1,785,567.53 and 431,806.20 is: 647,966.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,905.58 : 1,785,567.53 = 431,806.20 : x
  2. Step 2: Convert to fraction form
    1,189,905.58/1,785,567.53 = 431,806.20/x
  3. Step 3: Cross multiply
    1,189,905.58x = 1,785,567.53 × 431,806.20
  4. Step 4: Simplify right side
    1,189,905.58x = 771,019,129,972.69
  5. Step 5: Solve for x
    x = 771,019,129,972.69/1,189,905.58
  6. Step 6: Final answer
    x = 647,966.65

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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.