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Finding the Fourth Proportional to 1,065,670.64, 1,597,467 and 425,783.60

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Solution

The fourth proportional to 1,065,670.64, 1,597,467 and 425,783.60 is: 638,260.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065,670.64 : 1,597,467 = 425,783.60 : x
  2. Step 2: Convert to fraction form
    1,065,670.64/1,597,467 = 425,783.60/x
  3. Step 3: Cross multiply
    1,065,670.64x = 1,597,467 × 425,783.60
  4. Step 4: Simplify right side
    1,065,670.64x = 680,175,250,141.20
  5. Step 5: Solve for x
    x = 680,175,250,141.20/1,065,670.64
  6. Step 6: Final answer
    x = 638,260.29

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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.