Home / 688,656.24-1,032,945.48-215,285.76

Finding the Fourth Proportional to 688,656.24, 1,032,945.48 and 215,285.76

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Solution

The fourth proportional to 688,656.24, 1,032,945.48 and 215,285.76 is: 322,916.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,656.24 : 1,032,945.48 = 215,285.76 : x
  2. Step 2: Convert to fraction form
    688,656.24/1,032,945.48 = 215,285.76/x
  3. Step 3: Cross multiply
    688,656.24x = 1,032,945.48 × 215,285.76
  4. Step 4: Simplify right side
    688,656.24x = 222,378,452,700.37
  5. Step 5: Solve for x
    x = 222,378,452,700.37/688,656.24
  6. Step 6: Final answer
    x = 322,916.49

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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.