Home / 772,130.40-1,159,232.40-492,885.60

Finding the Fourth Proportional to 772,130.40, 1,159,232.40 and 492,885.60

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Solution

The fourth proportional to 772,130.40, 1,159,232.40 and 492,885.60 is: 739,990.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,130.40 : 1,159,232.40 = 492,885.60 : x
  2. Step 2: Convert to fraction form
    772,130.40/1,159,232.40 = 492,885.60/x
  3. Step 3: Cross multiply
    772,130.40x = 1,159,232.40 × 492,885.60
  4. Step 4: Simplify right side
    772,130.40x = 571,368,957,013.44
  5. Step 5: Solve for x
    x = 571,368,957,013.44/772,130.40
  6. Step 6: Final answer
    x = 739,990.24

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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.