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Finding the Fourth Proportional to 635,677.65, 876,868.41 and 380,881.20

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Solution

The fourth proportional to 635,677.65, 876,868.41 and 380,881.20 is: 525,396.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,677.65 : 876,868.41 = 380,881.20 : x
  2. Step 2: Convert to fraction form
    635,677.65/876,868.41 = 380,881.20/x
  3. Step 3: Cross multiply
    635,677.65x = 876,868.41 × 380,881.20
  4. Step 4: Simplify right side
    635,677.65x = 333,982,692,242.89
  5. Step 5: Solve for x
    x = 333,982,692,242.89/635,677.65
  6. Step 6: Final answer
    x = 525,396.31

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1.5x scale

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.