Home / 455,267.40-682,901.10-442,145.40

Finding the Fourth Proportional to 455,267.40, 682,901.10 and 442,145.40

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Solution

The fourth proportional to 455,267.40, 682,901.10 and 442,145.40 is: 663,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,267.40 : 682,901.10 = 442,145.40 : x
  2. Step 2: Convert to fraction form
    455,267.40/682,901.10 = 442,145.40/x
  3. Step 3: Cross multiply
    455,267.40x = 682,901.10 × 442,145.40
  4. Step 4: Simplify right side
    455,267.40x = 301,941,580,019.94
  5. Step 5: Solve for x
    x = 301,941,580,019.94/455,267.40
  6. Step 6: Final answer
    x = 663,218.10

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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.