Home / 557,905.28-769,905.33-316,185.80

Finding the Fourth Proportional to 557,905.28, 769,905.33 and 316,185.80

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Solution

The fourth proportional to 557,905.28, 769,905.33 and 316,185.80 is: 436,334.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,905.28 : 769,905.33 = 316,185.80 : x
  2. Step 2: Convert to fraction form
    557,905.28/769,905.33 = 316,185.80/x
  3. Step 3: Cross multiply
    557,905.28x = 769,905.33 × 316,185.80
  4. Step 4: Simplify right side
    557,905.28x = 243,433,132,690.31
  5. Step 5: Solve for x
    x = 243,433,132,690.31/557,905.28
  6. Step 6: Final answer
    x = 436,334.16

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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.