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Finding the Fourth Proportional to 703,262.72, 970,507.21 and 380,972.58

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Solution

The fourth proportional to 703,262.72, 970,507.21 and 380,972.58 is: 525,744.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,262.72 : 970,507.21 = 380,972.58 : x
  2. Step 2: Convert to fraction form
    703,262.72/970,507.21 = 380,972.58/x
  3. Step 3: Cross multiply
    703,262.72x = 970,507.21 × 380,972.58
  4. Step 4: Simplify right side
    703,262.72x = 369,736,635,702.30
  5. Step 5: Solve for x
    x = 369,736,635,702.30/703,262.72
  6. Step 6: Final answer
    x = 525,744.68

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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.