Home / 830,003.60-1,245,005.40-761,769.20

Finding the Fourth Proportional to 830,003.60, 1,245,005.40 and 761,769.20

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Solution

The fourth proportional to 830,003.60, 1,245,005.40 and 761,769.20 is: 1,142,653.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,003.60 : 1,245,005.40 = 761,769.20 : x
  2. Step 2: Convert to fraction form
    830,003.60/1,245,005.40 = 761,769.20/x
  3. Step 3: Cross multiply
    830,003.60x = 1,245,005.40 × 761,769.20
  4. Step 4: Simplify right side
    830,003.60x = 948,406,767,553.68
  5. Step 5: Solve for x
    x = 948,406,767,553.68/830,003.60
  6. Step 6: Final answer
    x = 1,142,653.80

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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.