Home / 726,027.20-1,089,040.80-525,406.40

Finding the Fourth Proportional to 726,027.20, 1,089,040.80 and 525,406.40

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Solution

The fourth proportional to 726,027.20, 1,089,040.80 and 525,406.40 is: 788,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,027.20 : 1,089,040.80 = 525,406.40 : x
  2. Step 2: Convert to fraction form
    726,027.20/1,089,040.80 = 525,406.40/x
  3. Step 3: Cross multiply
    726,027.20x = 1,089,040.80 × 525,406.40
  4. Step 4: Simplify right side
    726,027.20x = 572,189,006,181.12
  5. Step 5: Solve for x
    x = 572,189,006,181.12/726,027.20
  6. Step 6: Final answer
    x = 788,109.60

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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.