Home / 830,078.30-1,245,117.45-725,102.30

Finding the Fourth Proportional to 830,078.30, 1,245,117.45 and 725,102.30

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Solution

The fourth proportional to 830,078.30, 1,245,117.45 and 725,102.30 is: 1,087,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,078.30 : 1,245,117.45 = 725,102.30 : x
  2. Step 2: Convert to fraction form
    830,078.30/1,245,117.45 = 725,102.30/x
  3. Step 3: Cross multiply
    830,078.30x = 1,245,117.45 × 725,102.30
  4. Step 4: Simplify right side
    830,078.30x = 902,837,526,765.14
  5. Step 5: Solve for x
    x = 902,837,526,765.14/830,078.30
  6. Step 6: Final answer
    x = 1,087,653.45

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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.