Home / 1,385,915.56-2,078,873.18-521,512.84

Finding the Fourth Proportional to 1,385,915.56, 2,078,873.18 and 521,512.84

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Solution

The fourth proportional to 1,385,915.56, 2,078,873.18 and 521,512.84 is: 782,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,915.56 : 2,078,873.18 = 521,512.84 : x
  2. Step 2: Convert to fraction form
    1,385,915.56/2,078,873.18 = 521,512.84/x
  3. Step 3: Cross multiply
    1,385,915.56x = 2,078,873.18 × 521,512.84
  4. Step 4: Simplify right side
    1,385,915.56x = 1,084,159,056,101.63
  5. Step 5: Solve for x
    x = 1,084,159,056,101.63/1,385,915.56
  6. Step 6: Final answer
    x = 782,269.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.