Home / 785,156.34-1,177,709.40-329,988.72

Finding the Fourth Proportional to 785,156.34, 1,177,709.40 and 329,988.72

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Solution

The fourth proportional to 785,156.34, 1,177,709.40 and 329,988.72 is: 494,972.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,156.34 : 1,177,709.40 = 329,988.72 : x
  2. Step 2: Convert to fraction form
    785,156.34/1,177,709.40 = 329,988.72/x
  3. Step 3: Cross multiply
    785,156.34x = 1,177,709.40 × 329,988.72
  4. Step 4: Simplify right side
    785,156.34x = 388,630,817,437.97
  5. Step 5: Solve for x
    x = 388,630,817,437.97/785,156.34
  6. Step 6: Final answer
    x = 494,972.53

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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.