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Finding the Fourth Proportional to 578,633.72, 798,330 and 374,840.87

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Solution

The fourth proportional to 578,633.72, 798,330 and 374,840.87 is: 517,160.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,633.72 : 798,330 = 374,840.87 : x
  2. Step 2: Convert to fraction form
    578,633.72/798,330 = 374,840.87/x
  3. Step 3: Cross multiply
    578,633.72x = 798,330 × 374,840.87
  4. Step 4: Simplify right side
    578,633.72x = 299,246,707,755.45
  5. Step 5: Solve for x
    x = 299,246,707,755.45/578,633.72
  6. Step 6: Final answer
    x = 517,160.86

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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.