Home / 772,108.40-1,159,199.40-492,863.60

Finding the Fourth Proportional to 772,108.40, 1,159,199.40 and 492,863.60

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Solution

The fourth proportional to 772,108.40, 1,159,199.40 and 492,863.60 is: 739,957.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,108.40 : 1,159,199.40 = 492,863.60 : x
  2. Step 2: Convert to fraction form
    772,108.40/1,159,199.40 = 492,863.60/x
  3. Step 3: Cross multiply
    772,108.40x = 1,159,199.40 × 492,863.60
  4. Step 4: Simplify right side
    772,108.40x = 571,327,189,401.84
  5. Step 5: Solve for x
    x = 571,327,189,401.84/772,108.40
  6. Step 6: Final answer
    x = 739,957.23

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Double scale
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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.