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Finding the Fourth Proportional to 558,997.66, 771,525.98 and 355,285.90

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Solution

The fourth proportional to 558,997.66, 771,525.98 and 355,285.90 is: 490,363.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,997.66 : 771,525.98 = 355,285.90 : x
  2. Step 2: Convert to fraction form
    558,997.66/771,525.98 = 355,285.90/x
  3. Step 3: Cross multiply
    558,997.66x = 771,525.98 × 355,285.90
  4. Step 4: Simplify right side
    558,997.66x = 274,112,302,177.68
  5. Step 5: Solve for x
    x = 274,112,302,177.68/558,997.66
  6. Step 6: Final answer
    x = 490,363.95

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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.