Home / 487,102.90-671,765.22-405,701.38

Finding the Fourth Proportional to 487,102.90, 671,765.22 and 405,701.38

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Solution

The fourth proportional to 487,102.90, 671,765.22 and 405,701.38 is: 559,504.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,102.90 : 671,765.22 = 405,701.38 : x
  2. Step 2: Convert to fraction form
    487,102.90/671,765.22 = 405,701.38/x
  3. Step 3: Cross multiply
    487,102.90x = 671,765.22 × 405,701.38
  4. Step 4: Simplify right side
    487,102.90x = 272,536,076,790.00
  5. Step 5: Solve for x
    x = 272,536,076,790.00/487,102.90
  6. Step 6: Final answer
    x = 559,504.11

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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.