Home / 816,138.90-1,224,208.35-550,718.10

Finding the Fourth Proportional to 816,138.90, 1,224,208.35 and 550,718.10

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Solution

The fourth proportional to 816,138.90, 1,224,208.35 and 550,718.10 is: 826,077.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,138.90 : 1,224,208.35 = 550,718.10 : x
  2. Step 2: Convert to fraction form
    816,138.90/1,224,208.35 = 550,718.10/x
  3. Step 3: Cross multiply
    816,138.90x = 1,224,208.35 × 550,718.10
  4. Step 4: Simplify right side
    816,138.90x = 674,193,696,516.14
  5. Step 5: Solve for x
    x = 674,193,696,516.14/816,138.90
  6. Step 6: Final answer
    x = 826,077.15

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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.