Home / 937,128.30-1,405,364.40-487,699.80

Finding the Fourth Proportional to 937,128.30, 1,405,364.40 and 487,699.80

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Solution

The fourth proportional to 937,128.30, 1,405,364.40 and 487,699.80 is: 731,378.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    937,128.30 : 1,405,364.40 = 487,699.80 : x
  2. Step 2: Convert to fraction form
    937,128.30/1,405,364.40 = 487,699.80/x
  3. Step 3: Cross multiply
    937,128.30x = 1,405,364.40 × 487,699.80
  4. Step 4: Simplify right side
    937,128.30x = 685,395,936,807.12
  5. Step 5: Solve for x
    x = 685,395,936,807.12/937,128.30
  6. Step 6: Final answer
    x = 731,378.98

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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.