Home / 786,055.88-1,179,333.12-280,605.76

Finding the Fourth Proportional to 786,055.88, 1,179,333.12 and 280,605.76

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Solution

The fourth proportional to 786,055.88, 1,179,333.12 and 280,605.76 is: 420,997.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,055.88 : 1,179,333.12 = 280,605.76 : x
  2. Step 2: Convert to fraction form
    786,055.88/1,179,333.12 = 280,605.76/x
  3. Step 3: Cross multiply
    786,055.88x = 1,179,333.12 × 280,605.76
  4. Step 4: Simplify right side
    786,055.88x = 330,927,666,430.77
  5. Step 5: Solve for x
    x = 330,927,666,430.77/786,055.88
  6. Step 6: Final answer
    x = 420,997.63

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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.