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Finding the Fourth Proportional to 478,839.87, 660,804.12 and 263,987.63

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Solution

The fourth proportional to 478,839.87, 660,804.12 and 263,987.63 is: 364,305.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,839.87 : 660,804.12 = 263,987.63 : x
  2. Step 2: Convert to fraction form
    478,839.87/660,804.12 = 263,987.63/x
  3. Step 3: Cross multiply
    478,839.87x = 660,804.12 × 263,987.63
  4. Step 4: Simplify right side
    478,839.87x = 174,444,114,525.08
  5. Step 5: Solve for x
    x = 174,444,114,525.08/478,839.87
  6. Step 6: Final answer
    x = 364,305.74

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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.