Home / 688,633.80-1,032,950.70-215,318.40

Finding the Fourth Proportional to 688,633.80, 1,032,950.70 and 215,318.40

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Solution

The fourth proportional to 688,633.80, 1,032,950.70 and 215,318.40 is: 322,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,633.80 : 1,032,950.70 = 215,318.40 : x
  2. Step 2: Convert to fraction form
    688,633.80/1,032,950.70 = 215,318.40/x
  3. Step 3: Cross multiply
    688,633.80x = 1,032,950.70 × 215,318.40
  4. Step 4: Simplify right side
    688,633.80x = 222,413,292,002.88
  5. Step 5: Solve for x
    x = 222,413,292,002.88/688,633.80
  6. Step 6: Final answer
    x = 322,977.60

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Similar ratio
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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.