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Finding the Fourth Proportional to 459,607.20, 689,475.39 and 122,658.84

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Solution

The fourth proportional to 459,607.20, 689,475.39 and 122,658.84 is: 184,005.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,607.20 : 689,475.39 = 122,658.84 : x
  2. Step 2: Convert to fraction form
    459,607.20/689,475.39 = 122,658.84/x
  3. Step 3: Cross multiply
    459,607.20x = 689,475.39 × 122,658.84
  4. Step 4: Simplify right side
    459,607.20x = 84,570,251,545.95
  5. Step 5: Solve for x
    x = 84,570,251,545.95/459,607.20
  6. Step 6: Final answer
    x = 184,005.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.