Home / 830,003.70-1,245,005.55-573,140.55

Finding the Fourth Proportional to 830,003.70, 1,245,005.55 and 573,140.55

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Solution

The fourth proportional to 830,003.70, 1,245,005.55 and 573,140.55 is: 859,710.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,003.70 : 1,245,005.55 = 573,140.55 : x
  2. Step 2: Convert to fraction form
    830,003.70/1,245,005.55 = 573,140.55/x
  3. Step 3: Cross multiply
    830,003.70x = 1,245,005.55 × 573,140.55
  4. Step 4: Simplify right side
    830,003.70x = 713,563,165,680.05
  5. Step 5: Solve for x
    x = 713,563,165,680.05/830,003.70
  6. Step 6: Final answer
    x = 859,710.83

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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.