Home / 688,765.58-1,032,918.73-289,331.90

Finding the Fourth Proportional to 688,765.58, 1,032,918.73 and 289,331.90

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Solution

The fourth proportional to 688,765.58, 1,032,918.73 and 289,331.90 is: 433,901.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,765.58 : 1,032,918.73 = 289,331.90 : x
  2. Step 2: Convert to fraction form
    688,765.58/1,032,918.73 = 289,331.90/x
  3. Step 3: Cross multiply
    688,765.58x = 1,032,918.73 × 289,331.90
  4. Step 4: Simplify right side
    688,765.58x = 298,856,338,309.50
  5. Step 5: Solve for x
    x = 298,856,338,309.50/688,765.58
  6. Step 6: Final answer
    x = 433,901.38

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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.