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Finding the Fourth Proportional to 571,765, 857,647.50 and 391,672.84

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Solution

The fourth proportional to 571,765, 857,647.50 and 391,672.84 is: 587,509.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,765 : 857,647.50 = 391,672.84 : x
  2. Step 2: Convert to fraction form
    571,765/857,647.50 = 391,672.84/x
  3. Step 3: Cross multiply
    571,765x = 857,647.50 × 391,672.84
  4. Step 4: Simplify right side
    571,765x = 335,917,232,043.90
  5. Step 5: Solve for x
    x = 335,917,232,043.90/571,765
  6. Step 6: Final answer
    x = 587,509.26

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1.5x scale

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.