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Finding the Fourth Proportional to 478,610.76, 660,487.18 and 263,758.52

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Solution

The fourth proportional to 478,610.76, 660,487.18 and 263,758.52 is: 363,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,610.76 : 660,487.18 = 263,758.52 : x
  2. Step 2: Convert to fraction form
    478,610.76/660,487.18 = 263,758.52/x
  3. Step 3: Cross multiply
    478,610.76x = 660,487.18 × 263,758.52
  4. Step 4: Simplify right side
    478,610.76x = 174,209,121,075.77
  5. Step 5: Solve for x
    x = 174,209,121,075.77/478,610.76
  6. Step 6: Final answer
    x = 363,989.14

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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.