Home / 991,415.64-1,487,120.40-281,444.16

Finding the Fourth Proportional to 991,415.64, 1,487,120.40 and 281,444.16

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Solution

The fourth proportional to 991,415.64, 1,487,120.40 and 281,444.16 is: 422,165.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,415.64 : 1,487,120.40 = 281,444.16 : x
  2. Step 2: Convert to fraction form
    991,415.64/1,487,120.40 = 281,444.16/x
  3. Step 3: Cross multiply
    991,415.64x = 1,487,120.40 × 281,444.16
  4. Step 4: Simplify right side
    991,415.64x = 418,541,351,796.86
  5. Step 5: Solve for x
    x = 418,541,351,796.86/991,415.64
  6. Step 6: Final answer
    x = 422,165.37

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Double scale
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1.5x scale

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.