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Finding the Fourth Proportional to 562,761.75, 776,685.33 and 320,988.90

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Solution

The fourth proportional to 562,761.75, 776,685.33 and 320,988.90 is: 443,006.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,761.75 : 776,685.33 = 320,988.90 : x
  2. Step 2: Convert to fraction form
    562,761.75/776,685.33 = 320,988.90/x
  3. Step 3: Cross multiply
    562,761.75x = 776,685.33 × 320,988.90
  4. Step 4: Simplify right side
    562,761.75x = 249,307,369,722.84
  5. Step 5: Solve for x
    x = 249,307,369,722.84/562,761.75
  6. Step 6: Final answer
    x = 443,006.96

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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.