Home / 438,434.10-658,635.30-421,703.55

Finding the Fourth Proportional to 438,434.10, 658,635.30 and 421,703.55

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Solution

The fourth proportional to 438,434.10, 658,635.30 and 421,703.55 is: 633,501.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,434.10 : 658,635.30 = 421,703.55 : x
  2. Step 2: Convert to fraction form
    438,434.10/658,635.30 = 421,703.55/x
  3. Step 3: Cross multiply
    438,434.10x = 658,635.30 × 421,703.55
  4. Step 4: Simplify right side
    438,434.10x = 277,748,844,165.32
  5. Step 5: Solve for x
    x = 277,748,844,165.32/438,434.10
  6. Step 6: Final answer
    x = 633,501.92

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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.