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Finding the Fourth Proportional to 424,103.20, 636,154.80 and 405,901.60

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Solution

The fourth proportional to 424,103.20, 636,154.80 and 405,901.60 is: 608,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,103.20 : 636,154.80 = 405,901.60 : x
  2. Step 2: Convert to fraction form
    424,103.20/636,154.80 = 405,901.60/x
  3. Step 3: Cross multiply
    424,103.20x = 636,154.80 × 405,901.60
  4. Step 4: Simplify right side
    424,103.20x = 258,216,251,167.68
  5. Step 5: Solve for x
    x = 258,216,251,167.68/424,103.20
  6. Step 6: Final answer
    x = 608,852.40

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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.