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Finding the Fourth Proportional to 877,960, 1,211,636.64 and 495,976.96

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Solution

The fourth proportional to 877,960, 1,211,636.64 and 495,976.96 is: 684,477.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,960 : 1,211,636.64 = 495,976.96 : x
  2. Step 2: Convert to fraction form
    877,960/1,211,636.64 = 495,976.96/x
  3. Step 3: Cross multiply
    877,960x = 1,211,636.64 × 495,976.96
  4. Step 4: Simplify right side
    877,960x = 600,943,857,331.81
  5. Step 5: Solve for x
    x = 600,943,857,331.81/877,960
  6. Step 6: Final answer
    x = 684,477.49

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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.