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Finding the Fourth Proportional to 702,937.76, 970,052.40 and 380,647.88

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Solution

The fourth proportional to 702,937.76, 970,052.40 and 380,647.88 is: 525,293.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,937.76 : 970,052.40 = 380,647.88 : x
  2. Step 2: Convert to fraction form
    702,937.76/970,052.40 = 380,647.88/x
  3. Step 3: Cross multiply
    702,937.76x = 970,052.40 × 380,647.88
  4. Step 4: Simplify right side
    702,937.76x = 369,248,389,548.91
  5. Step 5: Solve for x
    x = 369,248,389,548.91/702,937.76
  6. Step 6: Final answer
    x = 525,293.15

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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.