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Finding the Fourth Proportional to 707,907.90, 976,914.66 and 385,620.34

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Solution

The fourth proportional to 707,907.90, 976,914.66 and 385,620.34 is: 532,157.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,907.90 : 976,914.66 = 385,620.34 : x
  2. Step 2: Convert to fraction form
    707,907.90/976,914.66 = 385,620.34/x
  3. Step 3: Cross multiply
    707,907.90x = 976,914.66 × 385,620.34
  4. Step 4: Simplify right side
    707,907.90x = 376,718,164,561.33
  5. Step 5: Solve for x
    x = 376,718,164,561.33/707,907.90
  6. Step 6: Final answer
    x = 532,157.03

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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.