Home / 815,809.03-1,125,977.51-521,270.35

Finding the Fourth Proportional to 815,809.03, 1,125,977.51 and 521,270.35

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Solution

The fourth proportional to 815,809.03, 1,125,977.51 and 521,270.35 is: 719,455.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,809.03 : 1,125,977.51 = 521,270.35 : x
  2. Step 2: Convert to fraction form
    815,809.03/1,125,977.51 = 521,270.35/x
  3. Step 3: Cross multiply
    815,809.03x = 1,125,977.51 × 521,270.35
  4. Step 4: Simplify right side
    815,809.03x = 586,938,690,729.83
  5. Step 5: Solve for x
    x = 586,938,690,729.83/815,809.03
  6. Step 6: Final answer
    x = 719,455.99

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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.