Home / 744,612.76-1,116,734.61-212,138.40

Finding the Fourth Proportional to 744,612.76, 1,116,734.61 and 212,138.40

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Solution

The fourth proportional to 744,612.76, 1,116,734.61 and 212,138.40 is: 318,155.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,612.76 : 1,116,734.61 = 212,138.40 : x
  2. Step 2: Convert to fraction form
    744,612.76/1,116,734.61 = 212,138.40/x
  3. Step 3: Cross multiply
    744,612.76x = 1,116,734.61 × 212,138.40
  4. Step 4: Simplify right side
    744,612.76x = 236,902,293,390.02
  5. Step 5: Solve for x
    x = 236,902,293,390.02/744,612.76
  6. Step 6: Final answer
    x = 318,155.03

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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.