Home / 684,081.90-1,026,122.85-210,912.30

Finding the Fourth Proportional to 684,081.90, 1,026,122.85 and 210,912.30

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Solution

The fourth proportional to 684,081.90, 1,026,122.85 and 210,912.30 is: 316,368.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,081.90 : 1,026,122.85 = 210,912.30 : x
  2. Step 2: Convert to fraction form
    684,081.90/1,026,122.85 = 210,912.30/x
  3. Step 3: Cross multiply
    684,081.90x = 1,026,122.85 × 210,912.30
  4. Step 4: Simplify right side
    684,081.90x = 216,421,930,376.06
  5. Step 5: Solve for x
    x = 216,421,930,376.06/684,081.90
  6. Step 6: Final answer
    x = 316,368.45

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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.