Home / 521,986.90-720,391.98-292,543.06

Finding the Fourth Proportional to 521,986.90, 720,391.98 and 292,543.06

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Solution

The fourth proportional to 521,986.90, 720,391.98 and 292,543.06 is: 403,737.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,986.90 : 720,391.98 = 292,543.06 : x
  2. Step 2: Convert to fraction form
    521,986.90/720,391.98 = 292,543.06/x
  3. Step 3: Cross multiply
    521,986.90x = 720,391.98 × 292,543.06
  4. Step 4: Simplify right side
    521,986.90x = 210,745,674,228.66
  5. Step 5: Solve for x
    x = 210,745,674,228.66/521,986.90
  6. Step 6: Final answer
    x = 403,737.48

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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.