Home / 692,040.49-1,038,211.19-212,270.20

Finding the Fourth Proportional to 692,040.49, 1,038,211.19 and 212,270.20

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Solution

The fourth proportional to 692,040.49, 1,038,211.19 and 212,270.20 is: 318,451.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,040.49 : 1,038,211.19 = 212,270.20 : x
  2. Step 2: Convert to fraction form
    692,040.49/1,038,211.19 = 212,270.20/x
  3. Step 3: Cross multiply
    692,040.49x = 1,038,211.19 × 212,270.20
  4. Step 4: Simplify right side
    692,040.49x = 220,381,296,943.54
  5. Step 5: Solve for x
    x = 220,381,296,943.54/692,040.49
  6. Step 6: Final answer
    x = 318,451.45

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Double scale
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Similar ratio
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1.5x scale

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.