Home / 455,243.20-682,864.80-410,142.40

Finding the Fourth Proportional to 455,243.20, 682,864.80 and 410,142.40

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Solution

The fourth proportional to 455,243.20, 682,864.80 and 410,142.40 is: 615,213.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,243.20 : 682,864.80 = 410,142.40 : x
  2. Step 2: Convert to fraction form
    455,243.20/682,864.80 = 410,142.40/x
  3. Step 3: Cross multiply
    455,243.20x = 682,864.80 × 410,142.40
  4. Step 4: Simplify right side
    455,243.20x = 280,071,807,947.52
  5. Step 5: Solve for x
    x = 280,071,807,947.52/455,243.20
  6. Step 6: Final answer
    x = 615,213.60

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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.