Home / 642,961.90-887,341.73-356,574.25

Finding the Fourth Proportional to 642,961.90, 887,341.73 and 356,574.25

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Solution

The fourth proportional to 642,961.90, 887,341.73 and 356,574.25 is: 492,102.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,961.90 : 887,341.73 = 356,574.25 : x
  2. Step 2: Convert to fraction form
    642,961.90/887,341.73 = 356,574.25/x
  3. Step 3: Cross multiply
    642,961.90x = 887,341.73 × 356,574.25
  4. Step 4: Simplify right side
    642,961.90x = 316,403,211,868.45
  5. Step 5: Solve for x
    x = 316,403,211,868.45/642,961.90
  6. Step 6: Final answer
    x = 492,102.58

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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.