Home / 821,725.35-1,134,708.10-512,156.25

Finding the Fourth Proportional to 821,725.35, 1,134,708.10 and 512,156.25

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Solution

The fourth proportional to 821,725.35, 1,134,708.10 and 512,156.25 is: 707,228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,725.35 : 1,134,708.10 = 512,156.25 : x
  2. Step 2: Convert to fraction form
    821,725.35/1,134,708.10 = 512,156.25/x
  3. Step 3: Cross multiply
    821,725.35x = 1,134,708.10 × 512,156.25
  4. Step 4: Simplify right side
    821,725.35x = 581,147,845,340.63
  5. Step 5: Solve for x
    x = 581,147,845,340.63/821,725.35
  6. Step 6: Final answer
    x = 707,228.81

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.