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Finding the Fourth Proportional to 694,345.95, 958,158.87 and 388,363.22

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Solution

The fourth proportional to 694,345.95, 958,158.87 and 388,363.22 is: 535,919.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,345.95 : 958,158.87 = 388,363.22 : x
  2. Step 2: Convert to fraction form
    694,345.95/958,158.87 = 388,363.22/x
  3. Step 3: Cross multiply
    694,345.95x = 958,158.87 × 388,363.22
  4. Step 4: Simplify right side
    694,345.95x = 372,113,664,024.76
  5. Step 5: Solve for x
    x = 372,113,664,024.76/694,345.95
  6. Step 6: Final answer
    x = 535,919.69

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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.