Home / 743,364.70-1,115,047.05-210,903.10

Finding the Fourth Proportional to 743,364.70, 1,115,047.05 and 210,903.10

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Solution

The fourth proportional to 743,364.70, 1,115,047.05 and 210,903.10 is: 316,354.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,364.70 : 1,115,047.05 = 210,903.10 : x
  2. Step 2: Convert to fraction form
    743,364.70/1,115,047.05 = 210,903.10/x
  3. Step 3: Cross multiply
    743,364.70x = 1,115,047.05 × 210,903.10
  4. Step 4: Simplify right side
    743,364.70x = 235,166,879,490.86
  5. Step 5: Solve for x
    x = 235,166,879,490.86/743,364.70
  6. Step 6: Final answer
    x = 316,354.65

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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.