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Finding the Fourth Proportional to 561,460.21, 774,952.79 and 319,885.23

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Solution

The fourth proportional to 561,460.21, 774,952.79 and 319,885.23 is: 441,520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,460.21 : 774,952.79 = 319,885.23 : x
  2. Step 2: Convert to fraction form
    561,460.21/774,952.79 = 319,885.23/x
  3. Step 3: Cross multiply
    561,460.21x = 774,952.79 × 319,885.23
  4. Step 4: Simplify right side
    561,460.21x = 247,895,952,774.94
  5. Step 5: Solve for x
    x = 247,895,952,774.94/561,460.21
  6. Step 6: Final answer
    x = 441,520.07

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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.