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Finding the Fourth Proportional to 561,309.56, 774,607.95 and 319,592.24

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Solution

The fourth proportional to 561,309.56, 774,607.95 and 319,592.24 is: 441,037.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,309.56 : 774,607.95 = 319,592.24 : x
  2. Step 2: Convert to fraction form
    561,309.56/774,607.95 = 319,592.24/x
  3. Step 3: Cross multiply
    561,309.56x = 774,607.95 × 319,592.24
  4. Step 4: Simplify right side
    561,309.56x = 247,558,685,989.27
  5. Step 5: Solve for x
    x = 247,558,685,989.27/561,309.56
  6. Step 6: Final answer
    x = 441,037.72

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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.