Home / 991,412.64-1,487,115.90-281,441.16

Finding the Fourth Proportional to 991,412.64, 1,487,115.90 and 281,441.16

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Solution

The fourth proportional to 991,412.64, 1,487,115.90 and 281,441.16 is: 422,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,412.64 : 1,487,115.90 = 281,441.16 : x
  2. Step 2: Convert to fraction form
    991,412.64/1,487,115.90 = 281,441.16/x
  3. Step 3: Cross multiply
    991,412.64x = 1,487,115.90 × 281,441.16
  4. Step 4: Simplify right side
    991,412.64x = 418,535,623,950.44
  5. Step 5: Solve for x
    x = 418,535,623,950.44/991,412.64
  6. Step 6: Final answer
    x = 422,160.87

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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.