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Finding the Fourth Proportional to 1,260,480.72, 1,739,468.80 and 687,533.20

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Solution

The fourth proportional to 1,260,480.72, 1,739,468.80 and 687,533.20 is: 948,798.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,480.72 : 1,739,468.80 = 687,533.20 : x
  2. Step 2: Convert to fraction form
    1,260,480.72/1,739,468.80 = 687,533.20/x
  3. Step 3: Cross multiply
    1,260,480.72x = 1,739,468.80 × 687,533.20
  4. Step 4: Simplify right side
    1,260,480.72x = 1,195,942,550,364.16
  5. Step 5: Solve for x
    x = 1,195,942,550,364.16/1,260,480.72
  6. Step 6: Final answer
    x = 948,798.76

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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.