Home / 726,442.80-1,089,664.20-558,286.80

Finding the Fourth Proportional to 726,442.80, 1,089,664.20 and 558,286.80

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Solution

The fourth proportional to 726,442.80, 1,089,664.20 and 558,286.80 is: 837,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,442.80 : 1,089,664.20 = 558,286.80 : x
  2. Step 2: Convert to fraction form
    726,442.80/1,089,664.20 = 558,286.80/x
  3. Step 3: Cross multiply
    726,442.80x = 1,089,664.20 × 558,286.80
  4. Step 4: Simplify right side
    726,442.80x = 608,345,139,292.56
  5. Step 5: Solve for x
    x = 608,345,139,292.56/726,442.80
  6. Step 6: Final answer
    x = 837,430.20

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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.