Home / 712,288.50-1,068,432.75-213,652.50

Finding the Fourth Proportional to 712,288.50, 1,068,432.75 and 213,652.50

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Solution

The fourth proportional to 712,288.50, 1,068,432.75 and 213,652.50 is: 320,478.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,288.50 : 1,068,432.75 = 213,652.50 : x
  2. Step 2: Convert to fraction form
    712,288.50/1,068,432.75 = 213,652.50/x
  3. Step 3: Cross multiply
    712,288.50x = 1,068,432.75 × 213,652.50
  4. Step 4: Simplify right side
    712,288.50x = 228,273,328,119.38
  5. Step 5: Solve for x
    x = 228,273,328,119.38/712,288.50
  6. Step 6: Final answer
    x = 320,478.75

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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.