Home / 726,720.40-1,089,643.20-372,426.40

Finding the Fourth Proportional to 726,720.40, 1,089,643.20 and 372,426.40

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Solution

The fourth proportional to 726,720.40, 1,089,643.20 and 372,426.40 is: 558,415.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,720.40 : 1,089,643.20 = 372,426.40 : x
  2. Step 2: Convert to fraction form
    726,720.40/1,089,643.20 = 372,426.40/x
  3. Step 3: Cross multiply
    726,720.40x = 1,089,643.20 × 372,426.40
  4. Step 4: Simplify right side
    726,720.40x = 405,811,894,260.48
  5. Step 5: Solve for x
    x = 405,811,894,260.48/726,720.40
  6. Step 6: Final answer
    x = 558,415.44

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Double scale
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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.