Home / 782,308.56-1,079,400.76-442,776.80

Finding the Fourth Proportional to 782,308.56, 1,079,400.76 and 442,776.80

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Solution

The fourth proportional to 782,308.56, 1,079,400.76 and 442,776.80 is: 610,927.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,308.56 : 1,079,400.76 = 442,776.80 : x
  2. Step 2: Convert to fraction form
    782,308.56/1,079,400.76 = 442,776.80/x
  3. Step 3: Cross multiply
    782,308.56x = 1,079,400.76 × 442,776.80
  4. Step 4: Simplify right side
    782,308.56x = 477,933,614,430.37
  5. Step 5: Solve for x
    x = 477,933,614,430.37/782,308.56
  6. Step 6: Final answer
    x = 610,927.25

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.