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Finding the Fourth Proportional to 561,710.58, 775,160.82 and 307,061.70

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Solution

The fourth proportional to 561,710.58, 775,160.82 and 307,061.70 is: 423,745.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,710.58 : 775,160.82 = 307,061.70 : x
  2. Step 2: Convert to fraction form
    561,710.58/775,160.82 = 307,061.70/x
  3. Step 3: Cross multiply
    561,710.58x = 775,160.82 × 307,061.70
  4. Step 4: Simplify right side
    561,710.58x = 238,022,199,162.59
  5. Step 5: Solve for x
    x = 238,022,199,162.59/561,710.58
  6. Step 6: Final answer
    x = 423,745.27

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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.