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Finding the Fourth Proportional to 609,615.72, 841,680.63 and 380,521.89

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Solution

The fourth proportional to 609,615.72, 841,680.63 and 380,521.89 is: 525,376.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,615.72 : 841,680.63 = 380,521.89 : x
  2. Step 2: Convert to fraction form
    609,615.72/841,680.63 = 380,521.89/x
  3. Step 3: Cross multiply
    609,615.72x = 841,680.63 × 380,521.89
  4. Step 4: Simplify right side
    609,615.72x = 320,277,904,103.99
  5. Step 5: Solve for x
    x = 320,277,904,103.99/609,615.72
  6. Step 6: Final answer
    x = 525,376.71

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1.5x scale

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.