Home / 878,242.20-1,212,308.67-572,392.98

Finding the Fourth Proportional to 878,242.20, 1,212,308.67 and 572,392.98

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Solution

The fourth proportional to 878,242.20, 1,212,308.67 and 572,392.98 is: 790,120.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,242.20 : 1,212,308.67 = 572,392.98 : x
  2. Step 2: Convert to fraction form
    878,242.20/1,212,308.67 = 572,392.98/x
  3. Step 3: Cross multiply
    878,242.20x = 1,212,308.67 × 572,392.98
  4. Step 4: Simplify right side
    878,242.20x = 693,916,974,447.61
  5. Step 5: Solve for x
    x = 693,916,974,447.61/878,242.20
  6. Step 6: Final answer
    x = 790,120.29

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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.