Home / 815,809.32-1,125,977.85-521,270.64

Finding the Fourth Proportional to 815,809.32, 1,125,977.85 and 521,270.64

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Solution

The fourth proportional to 815,809.32, 1,125,977.85 and 521,270.64 is: 719,456.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,809.32 : 1,125,977.85 = 521,270.64 : x
  2. Step 2: Convert to fraction form
    815,809.32/1,125,977.85 = 521,270.64/x
  3. Step 3: Cross multiply
    815,809.32x = 1,125,977.85 × 521,270.64
  4. Step 4: Simplify right side
    815,809.32x = 586,939,194,495.32
  5. Step 5: Solve for x
    x = 586,939,194,495.32/815,809.32
  6. Step 6: Final answer
    x = 719,456.35

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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.