Home / 716,947.20-990,273.60-525,657.60

Finding the Fourth Proportional to 716,947.20, 990,273.60 and 525,657.60

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Solution

The fourth proportional to 716,947.20, 990,273.60 and 525,657.60 is: 726,057.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,947.20 : 990,273.60 = 525,657.60 : x
  2. Step 2: Convert to fraction form
    716,947.20/990,273.60 = 525,657.60/x
  3. Step 3: Cross multiply
    716,947.20x = 990,273.60 × 525,657.60
  4. Step 4: Simplify right side
    716,947.20x = 520,544,843,919.36
  5. Step 5: Solve for x
    x = 520,544,843,919.36/716,947.20
  6. Step 6: Final answer
    x = 726,057.43

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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.