Home / 739,990.44-1,020,493.80-491,192.40

Finding the Fourth Proportional to 739,990.44, 1,020,493.80 and 491,192.40

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Solution

The fourth proportional to 739,990.44, 1,020,493.80 and 491,192.40 is: 677,385.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,990.44 : 1,020,493.80 = 491,192.40 : x
  2. Step 2: Convert to fraction form
    739,990.44/1,020,493.80 = 491,192.40/x
  3. Step 3: Cross multiply
    739,990.44x = 1,020,493.80 × 491,192.40
  4. Step 4: Simplify right side
    739,990.44x = 501,258,798,807.12
  5. Step 5: Solve for x
    x = 501,258,798,807.12/739,990.44
  6. Step 6: Final answer
    x = 677,385.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.