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Finding the Fourth Proportional to 828,320.10, 1,240,730.55 and 828,320.10

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Solution

The fourth proportional to 828,320.10, 1,240,730.55 and 828,320.10 is: 1,240,730.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,320.10 : 1,240,730.55 = 828,320.10 : x
  2. Step 2: Convert to fraction form
    828,320.10/1,240,730.55 = 828,320.10/x
  3. Step 3: Cross multiply
    828,320.10x = 1,240,730.55 × 828,320.10
  4. Step 4: Simplify right side
    828,320.10x = 1,027,722,053,249.06
  5. Step 5: Solve for x
    x = 1,027,722,053,249.06/828,320.10
  6. Step 6: Final answer
    x = 1,240,730.55

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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.