Home / 722,703.40-1,084,055.10-386,780.20

Finding the Fourth Proportional to 722,703.40, 1,084,055.10 and 386,780.20

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Solution

The fourth proportional to 722,703.40, 1,084,055.10 and 386,780.20 is: 580,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,703.40 : 1,084,055.10 = 386,780.20 : x
  2. Step 2: Convert to fraction form
    722,703.40/1,084,055.10 = 386,780.20/x
  3. Step 3: Cross multiply
    722,703.40x = 1,084,055.10 × 386,780.20
  4. Step 4: Simplify right side
    722,703.40x = 419,291,048,389.02
  5. Step 5: Solve for x
    x = 419,291,048,389.02/722,703.40
  6. Step 6: Final answer
    x = 580,170.30

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Double scale
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Similar ratio
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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.