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Finding the Fourth Proportional to 681,798.81, 940,888.88 and 375,886.38

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Solution

The fourth proportional to 681,798.81, 940,888.88 and 375,886.38 is: 518,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,798.81 : 940,888.88 = 375,886.38 : x
  2. Step 2: Convert to fraction form
    681,798.81/940,888.88 = 375,886.38/x
  3. Step 3: Cross multiply
    681,798.81x = 940,888.88 × 375,886.38
  4. Step 4: Simplify right side
    681,798.81x = 353,667,315,085.45
  5. Step 5: Solve for x
    x = 353,667,315,085.45/681,798.81
  6. Step 6: Final answer
    x = 518,726.80

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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.