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Finding the Fourth Proportional to 636,545.45, 878,443.43 and 364,637.12

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Solution

The fourth proportional to 636,545.45, 878,443.43 and 364,637.12 is: 503,205.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,545.45 : 878,443.43 = 364,637.12 : x
  2. Step 2: Convert to fraction form
    636,545.45/878,443.43 = 364,637.12/x
  3. Step 3: Cross multiply
    636,545.45x = 878,443.43 × 364,637.12
  4. Step 4: Simplify right side
    636,545.45x = 320,313,076,182.72
  5. Step 5: Solve for x
    x = 320,313,076,182.72/636,545.45
  6. Step 6: Final answer
    x = 503,205.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.