Home / 765,032.65-1,055,723.83-420,866.89

Finding the Fourth Proportional to 765,032.65, 1,055,723.83 and 420,866.89

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Solution

The fourth proportional to 765,032.65, 1,055,723.83 and 420,866.89 is: 580,784.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,032.65 : 1,055,723.83 = 420,866.89 : x
  2. Step 2: Convert to fraction form
    765,032.65/1,055,723.83 = 420,866.89/x
  3. Step 3: Cross multiply
    765,032.65x = 1,055,723.83 × 420,866.89
  4. Step 4: Simplify right side
    765,032.65x = 444,319,201,339.51
  5. Step 5: Solve for x
    x = 444,319,201,339.51/765,032.65
  6. Step 6: Final answer
    x = 580,784.63

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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.