Home / 688,490.55-1,032,736.64-215,178.39

Finding the Fourth Proportional to 688,490.55, 1,032,736.64 and 215,178.39

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Solution

The fourth proportional to 688,490.55, 1,032,736.64 and 215,178.39 is: 322,767.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,490.55 : 1,032,736.64 = 215,178.39 : x
  2. Step 2: Convert to fraction form
    688,490.55/1,032,736.64 = 215,178.39/x
  3. Step 3: Cross multiply
    688,490.55x = 1,032,736.64 × 215,178.39
  4. Step 4: Simplify right side
    688,490.55x = 222,222,606,413.32
  5. Step 5: Solve for x
    x = 222,222,606,413.32/688,490.55
  6. Step 6: Final answer
    x = 322,767.84

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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.