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Finding the Fourth Proportional to 680,763.69, 939,476.48 and 374,862.74

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Solution

The fourth proportional to 680,763.69, 939,476.48 and 374,862.74 is: 517,323.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,763.69 : 939,476.48 = 374,862.74 : x
  2. Step 2: Convert to fraction form
    680,763.69/939,476.48 = 374,862.74/x
  3. Step 3: Cross multiply
    680,763.69x = 939,476.48 × 374,862.74
  4. Step 4: Simplify right side
    680,763.69x = 352,174,720,886.66
  5. Step 5: Solve for x
    x = 352,174,720,886.66/680,763.69
  6. Step 6: Final answer
    x = 517,323.01

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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.