Home / 991,887.84-1,487,608.20-281,900.16

Finding the Fourth Proportional to 991,887.84, 1,487,608.20 and 281,900.16

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Solution

The fourth proportional to 991,887.84, 1,487,608.20 and 281,900.16 is: 422,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,887.84 : 1,487,608.20 = 281,900.16 : x
  2. Step 2: Convert to fraction form
    991,887.84/1,487,608.20 = 281,900.16/x
  3. Step 3: Cross multiply
    991,887.84x = 1,487,608.20 × 281,900.16
  4. Step 4: Simplify right side
    991,887.84x = 419,356,989,597.31
  5. Step 5: Solve for x
    x = 419,356,989,597.31/991,887.84
  6. Step 6: Final answer
    x = 422,786.70

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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.