Home / 1,189,905.24-1,785,567.06-431,805.90

Finding the Fourth Proportional to 1,189,905.24, 1,785,567.06 and 431,805.90

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Solution

The fourth proportional to 1,189,905.24, 1,785,567.06 and 431,805.90 is: 647,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,905.24 : 1,785,567.06 = 431,805.90 : x
  2. Step 2: Convert to fraction form
    1,189,905.24/1,785,567.06 = 431,805.90/x
  3. Step 3: Cross multiply
    1,189,905.24x = 1,785,567.06 × 431,805.90
  4. Step 4: Simplify right side
    1,189,905.24x = 771,018,391,353.65
  5. Step 5: Solve for x
    x = 771,018,391,353.65/1,189,905.24
  6. Step 6: Final answer
    x = 647,966.21

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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.