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Finding the Fourth Proportional to 455,206.70, 636,108.40 and 455,206.70

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Solution

The fourth proportional to 455,206.70, 636,108.40 and 455,206.70 is: 636,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,206.70 : 636,108.40 = 455,206.70 : x
  2. Step 2: Convert to fraction form
    455,206.70/636,108.40 = 455,206.70/x
  3. Step 3: Cross multiply
    455,206.70x = 636,108.40 × 455,206.70
  4. Step 4: Simplify right side
    455,206.70x = 289,560,805,606.28
  5. Step 5: Solve for x
    x = 289,560,805,606.28/455,206.70
  6. Step 6: Final answer
    x = 636,108.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.