Home / 726,419.20-1,089,628.80-525,798.40

Finding the Fourth Proportional to 726,419.20, 1,089,628.80 and 525,798.40

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Solution

The fourth proportional to 726,419.20, 1,089,628.80 and 525,798.40 is: 788,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,419.20 : 1,089,628.80 = 525,798.40 : x
  2. Step 2: Convert to fraction form
    726,419.20/1,089,628.80 = 525,798.40/x
  3. Step 3: Cross multiply
    726,419.20x = 1,089,628.80 × 525,798.40
  4. Step 4: Simplify right side
    726,419.20x = 572,925,079,633.92
  5. Step 5: Solve for x
    x = 572,925,079,633.92/726,419.20
  6. Step 6: Final answer
    x = 788,697.60

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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.