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Finding the Fourth Proportional to 478,622.30, 660,503.28 and 263,770.20

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Solution

The fourth proportional to 478,622.30, 660,503.28 and 263,770.20 is: 364,005.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,622.30 : 660,503.28 = 263,770.20 : x
  2. Step 2: Convert to fraction form
    478,622.30/660,503.28 = 263,770.20/x
  3. Step 3: Cross multiply
    478,622.30x = 660,503.28 × 263,770.20
  4. Step 4: Simplify right side
    478,622.30x = 174,221,082,266.26
  5. Step 5: Solve for x
    x = 174,221,082,266.26/478,622.30
  6. Step 6: Final answer
    x = 364,005.36

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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.