Home / 712,276.80-1,068,415.20-213,640.80

Finding the Fourth Proportional to 712,276.80, 1,068,415.20 and 213,640.80

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Solution

The fourth proportional to 712,276.80, 1,068,415.20 and 213,640.80 is: 320,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,276.80 : 1,068,415.20 = 213,640.80 : x
  2. Step 2: Convert to fraction form
    712,276.80/1,068,415.20 = 213,640.80/x
  3. Step 3: Cross multiply
    712,276.80x = 1,068,415.20 × 213,640.80
  4. Step 4: Simplify right side
    712,276.80x = 228,257,078,060.16
  5. Step 5: Solve for x
    x = 228,257,078,060.16/712,276.80
  6. Step 6: Final answer
    x = 320,461.20

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Similar ratio
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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.